I personally still use DefaultTrust, because I trust theymos (if you're using this forum at all, you have some trust in him at a minimum), but I check all of a user's trust ratings and the people who created them before making a deal anyway, so I only really use my trust list for a first impression (though I haven't yet disagreed with it).
Well said. If I were to EVER interact with anyone, I'd listen to all the reviews, not just those that I deem "trustworthy". Sure, there's bound to be a few bad sources, but overall, there's more trusthworthy sources than not for most people.