I too got a few i didnt accept
i am at 100 now, so I'm full, but I'm getting ready to clean my Friends list up and remove people i do not play with.
Noting against anyone, but if i do not play with you, or if i sent a couple of party invites and you do not accept, i will be removing you.
its not that I'm mad or anything, but we have grown so fast over the last few months that i have no room to add the new members that i do play with.
i wish M$ would raise the limit and also allow you to put users in groups.