What is the + and - in the discussion?

Hello jianhong it is like a positve and negative rating you give to a discussion that in the end establishes the star ratings next to the name....

the + and - is for how people rate you on your topics and responses. this can tell if you have been abusive or may have a relevant response with the topic posted. it may also help build your credibility here in mylot. and most of all those ratings are also good for rating the responses you have for selecting the best response. hope that answers your question :).

the (+) and (-) signs are for increasing or decreasing the reputation of the member of mylot who has posted that post, the (+) sign is to increase the repuatation and the (-) sign is to decrease the reputation of the poster