I don't do that even tho my own forum is fairly new, and getting hardly any posts whatsoever, even tho it does get alot of traffic.
I post new content once or twice a day, but lately it's been more like once or twice a week, because the site has led to my increased involvement in local issues, and being invited to be on a couple of local committees.
So what I'm actually doing is leaving the site up, and hoping it will eventually gain some activity, altho there may come a time when I might have to take it down, since I can't see spending $50 per month for hosting sites that are not being used.
We shall see.