I've not really noticed anyone leaving but I mainly stick to the marathon thread. I use that 'dog stick' place to log my runs but I don't partake in any chat - I don't understand how their forums work for starters. Better the devil you know and all that.
Keir, you need to do a pitch - yes, sell yourself.
Bit on background, target, current training etc. Show some pictures of your kids! 
It got me under 3:30 a couple of years ago. I needed someone to keep me on the straight and narrow - DD failed in that respect
but did push me to 3:28. 