When picking a random I usually ignore their skill level and look at their profile instead as it seems to be a better indicator. Some things I would avoid are: - 16-18/ strong 2s indicates weaker and maybe rusty players (in my experience on BBO anyway). - People who feel the need to list basic things like stayman, transfer, weak 3, natural... - Stolen bids - No transfer/stayman - Gerber - 01234 blackwood or something similar - Open 12+/13+ - Opening one major with 4+ and other major with 5+ of the bid suit. Other than that list and perhaps a few others I'll be willing to play with most people as long as I can play most of the conventions on their profile.