BF, and in particular this sub-forum, significantly aided my transition to what is hopefully long term (as opposed to intermittent) car-freedom. There were a few situations that I worried about in the long term - especially living in an area without particularly practical public transport, cab service, etc. - and people on here had some amazingly good solutions.
Before joining BF I'd been lurking for a number of years, and before that, I was already riding on a regular basis. I occasionally find something useful on the winter forum, but I really have the Icebike listserv to thank for most of my introduction to the wonderful world of winter riding.