online communities are made what they are by the membership. they are only as stable as the people that run them though. i've been on ones that just disappeared (bbc sport cycling), ones that changed overnight and lost a lot of members (c+/bikeradar) and ones that, well you know. cyclechat has done well in the time it had the influx from c+, as has yacf in the few weeks it's been around. it's people like us that make these places what they are, but we are, or course, at the mercy of the admin, be they a corporate body, a public service broadcaster, or just someone that fancies starting a forum.
this place must be unusual in that it has had such a rapid start and grown very quickly, cyclechat was around (and fairly inconsequential) for a while until the c+ influx. i guess we got lucky finding a ready made forum with an admin that shared our vision.