It would be nice if we could see a list of who we've blocked. I have definitely blocked a few people for lasting reasons (nothing awful! but I'm glad we have the option) -- but I have probably also blocked players who I just ran across at the wrong time in the wrong mood (theirs or mine), and I'd like the ability to scan that list and undo some of them. At the moment, people don't get second chances, which I think is a shame.