How can a member have 100% positive feedback when some of the comments are definitely negative

[hpenman-uk]

I have recently sold an item on ebay, I check out the buyers to see if they are good ebayers, and this particular ebayer had 100% positive feedback( didnt go into the feedback in detail just the update screen)

Unfortunatey I am having issues with them, which was a surprise due to their unblemished record, but when I opened up their feedback I found that whilst they have all green when you read them, there are several that are definitely negative feedback but they have a green + next to them... how is that possible? This gave me an skewed impression of this member. I am not happy because now I have issues with this person and if I had known, I might not have concluded the sale. 

[pixiesen2012]

sellers are not allowed to leave negative feedback to buyers,

but some sellers decide to leave positive feedback with negative remarks

this practise is against the rules and doesn't help anyone apart from the non payer!

when you have a non payer you need to complete a non payment case to get your final value fees refunded and give them a non payment strike

http://pages.ebay.co.uk/help/sell/unpaid-items.html

then add the non payers ID to your blocked list

http://offer.ebay.co.uk/ws/eBayISAPI.dll?BidderBlockLogin

then set you bidder requirements to block bidders with two or more non payment strikes in the last 12 months

http://offer.ebay.co.uk/ws/eBayISAPI.dll?BuyerBlockPreferences