Sounds to me Wingman that you're trying to talk people in to this (yeah old) idea of yours being ok. If it's cool with YOU then just do it. Personally I think it's weak sauce, but that's just an opinion and I really don't care what you do with your board :)
But having said that, I understand the frustration of having a board that is like a ghost town. Mine isn't, but I understand just the same. I'd rather join a populated forum than lie and have conversations with myself to draw people in. Has that ever even worked? If so, where?
I run a motorcycle themed forum and I had a member who was a local mechanic and he would create accounts and talk to himself on the board telling himself how awesome he was to try and gain popularity. I started to become suspicious so I checked IP addresses and sure enough... I sent him a message saying that his actions would no longer be tolerated and he messaged back saying he understood. Out of embarrassment he ended up not coming back.
So in the end, with the possibility of others finding out what you've done talking to yourself and that being really weird, are YOU willing to take that kind of embarrassment? I'd crawl under a rock and die.