I don't really know if I really need to add anything here. Personally I've tried a few times to add people to my friends list and every single time I have to resort to adding them on steam, and thus rolling the dice of their Steam username being the same as their LTD2 username. I really don't know if it is just bugged for me (and if it is, I'll post something like the output_log file or whatever files you need from me) but I know for a fact that the friend requests aren't sending. This is because they don't show up in my outgoing requests on steam when I send a friend request. For clarification, I'm talking about the option when you are in-game and you right-click on a person and select the option to add them as a friend.