When sending a PM to several people its a pain when you reply as you have to add the extra people manually. Would it be possible to add a "reply all" option to sending PM's?
Yeah, that's been a minor annoyance for me as well. It requires a hack, and we try to limit the number of those we install since they have a tendency to interfere with each other and/or break when we upgrade the forums, so we'll have to think about whether this is important enough to warrant it.
Lee has been spamming us with PMs about all the Chi-town get-togethers that are going on and I can't stand it anymore. I think it would be occasionally useful also.