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Kershaw Blur Tanto Black Serrated Pocket Knife (1670TBLKST); 3.4 inch Cerakote Finish Blade,...
More product info
From Kershaw
This report was last updated 8/10/2022.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
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Note: We only analyze "reviews" and ignore one-tap "ratings".
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Report Card
Pass Overall Grade
FAIL 
Deleted Reviews
Deleted ReviewsFAIL Unverified Purchases
Unverified PurchasesFAIL Brand Repeats
Brand RepeatsFAIL Suspicious Reviewers
Suspicious ReviewersPASS Rating Trend
Rating TrendPASS Word Count Comparison
Word Count ComparisonPASS Phrase Repetition
Phrase RepetitionPASS Overlapping Review History
Overlapping Review HistoryPASS Reviewer Ease
Reviewer EasePASS Incentivized Reviews
Incentivized ReviewsN/A Reviewer Participation
Reviewer Participation
Most Trusted Reviews
I've been carrying a pocket knife since 15 years old ... [Go to full review]
Jul 5, 2021
100%
TRUST
TRUST
-
Verified Purchaser
-
Overlapping Review History: reviewed 1 of 9 top products -
Easy Grader (avg. rating: 4.4)
Take-Back Reviewer (28 deleted Reviews; avg. rating: 4.0)
Single-Day Reviewer (posted all reviews on Mar 3, 2022)
Least Trusted Reviews
Kershaw should be a shamed. They have a known issue ... [Go to full review]
Jan 21, 2015
0%
TRUST
TRUST
-
Unverified Purchaser
-
Never-Verified Reviewer -
Brand Monogamist (3 of 3 reviews for this brand; avg rating: 1.3) -
Critical Reviewer (avg. rating: 1.3)
Contains repetitive phrases 
Overrepresented Participation (posted 9 Reviews)
One-Hit Wonder
Analysis Details
Fail Deleted Reviews
Deleted Reviews
We discovered a total of 16 deleted Reviews for this product, with an average rating of 4.8. Even though deleted reviews don't affect the average rating, the fact that action was taken to delete reviews raises some red flags about the integrity of the reviews for the product as whole.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
- We don't have a magic ability to collect every single deleted review; we can only identify reviews as deleted if we collect them on one date and then notice they are no longer visible on a subsequent date.
- We have no information on reviews that were never published in the first place.
- We also don't know why these reviews were removed. It could be action from the platform, personal decision by the review author, part of an entire account closure, even some data error on our part, etc.
4.8 average rating of deleted reviews
Fail Unverified Purchases
Unverified Purchases
109 of the 1,789 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 4.0 while the verified purchasers have rated this product an average of 4.9. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Unverified purchases may be the result of Kindle Unlimited readers, buyers who didn't pay full price, or reviewers who did not purchase the product at Amazon. Read more about our Unverified Purchases test.
Fail Brand Repeats
Brand Repeats
Brand Monogamists
Less than approximately 10% of reviewers have reviewed multiple products, but only for this brand. This is an excessively large percentage of Brand Monogamists which may indicate unnatural reviews.
Fail Suspicious Reviewers
Suspicious Reviewers
Never-Verified Reviewers
Less than approximately 10% of reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 1.0 while the reviewers who have written at least one verified purchase review rated this product an average of 4.9. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Take-Back Reviewers
Approximately 45% of reviewers have had at least one of their past reviews for another product deleted. While this is more Take-Back Reviewers than we'd expect to see, the discrepancy in ratings between the Take-Back Reviewers and reviewers who don't have any deleted reviews in their history isn't significant enough to rule out the possibility of it being due to random chance.
Pass Rating Trend
Rating Trend
-
- <10%
- Created on high-volume days
We didn't notice any signals that would indicate reviews were created unevenly over time.
Read more about our Rating Trend test.
Read more about our Rating Trend test.
Pass Word Count Comparison
Word Count Comparison
-
- <10%
- Have an overrepresented word count
We didn't find any review word count groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Word Count Comparison test.
Read more about our Word Count Comparison test.
Pass Phrase Repetition
Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
Common Phrases in Reviews:
~6% of reviews
(5.0/5)
(5.0/5)
~4% of reviews
(5.0/5)
(5.0/5)
-
- <10%
- Used substantial repetitive phrases
Less than approximately 10% of reviews use substantial repetitive phrases between them. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Read more about our Phrase Repetition test.
Read more about our Phrase Repetition test.
Pass Overlapping Review History
Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
<10% also reviewed:
Mediabridge 3.5mm Male to Male Stereo Audio Cable... by Mediabridge
<10% also reviewed:
NINTENDO MarioKart Wii Standard Karts Building Set by Nintendo
<10% also reviewed:
Clore Automotive Jump-N-Carry JNC660 1700 Peak... by Clore Automotive
<10% also reviewed:
GE 23305 RG6 Coaxial Cable with F Plugs Each End... by GE
<10% also reviewed:
Macally Car Cup Holder Phone Mount [Upgraded],... by Macally
<10% also reviewed:
Echo Dot (2nd Generation) - Smart speaker with... by Amazon
<10% also reviewed:
Fairy Tales Rosemary Repel Daily Kids Shampoo, 12... by Fairy Tales
<10% also reviewed:
Optimum Nutrition Gold Standard 100% Whey Protein... by Optimum Nutrition
<10% also reviewed:
OXO Water Bottle Cleaning Set by OXO
Approximately 25% of reviewers have substantial overlapping product review history. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Reviewer Ease
Reviewer Ease
The ease score is the average rating for all reviews that a given reviewer submits. The average ease score for reviewers of this product is 4.1, while the average ease score for reviewers in this category is 4.3.
4.1 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Incentivized Reviews
Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
-
- <10%
- Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.