The Toolhaus 90Neg tool allows sellers to see if they are in danger of falling into the 1% of sellers that eBay is restricting. Here is the FAQ for the 90Neg tool.
Quote from a Pink on eBay's Seller Central Discussion Board:
If you pick a seller ID and search using the tool, it will display all of the negs and neutrals for that seller over a 90 day period and provide % of bad buyer experiences, 5% being the guideline set by eBay T&S. (Be aware that it takes awhile to calculate the totals and show the comments)
eBay requires sellers to maintain minimum standards in buyer satisfaction. Our goal is to ensure that the marketplace is a safe and reputable place for the community to buy and sell. We have found that 1% of eBay sellers are responsible for 35% of bad buyer experiences on eBay. This not only impacts buyers, but is harmful to other sellers and the eBay marketplace as a whole.
Sellers receiving this notification have been identified as part of this bottom 1% of sellers as measured by Feedback and Item Not Received complaints over the past 90 days. If more than 5% of a seller/s buyers are dissatisfied, as measured by negative and neutral Feedback left or Item Not Received complaints during a 90 day period, the seller is in violation of the Seller Non-Performance policy.
My suggestion is to pick a seller with a low feedback rating, maybe 97% and then compare them to a seller with 100% feedback. The majority of the neutrals are negative in nature even though you will find the occasional "Perfect transaction with a neutral rating" The vast majority of neutrals are negative in nature.
The problem with this tool is it only presents the negative comments, so buyers using this to pre-screen sellers would look at this data and never buy on eBay again. The perspective is skewed. Use this tool with caution.
It is also important to note that by reading some of the comments left by buyers you will get a feel for what sellers have to go through on a daily basis to make some people happy. Just check the responses left for a seller with a rating of greater than 99%
Please remember that the vast majority of eBay transactions are completed satisfactorily even from the poorly rated sellers. Heck a shortstop in the Major Leagues can win the Gold Glove for excellence with a 98.7% fielding percentage. Even eBay stated they were please with users response to eBay Express that was stated as 9 out of 10 Express visitors liked the site. That rating would get a seller kicked off of eBay.
There is a buyer satisfaction problem on eBay but the recent crack down will do nothing to solve the problem. It is also evident that eBay needs to discard the neutral rating completely and allow buyers to rate the transaction with a Positive or a Negative becasue that is all eBay is measuring for.