My site, Scribophile, was freemium from day 1 and was profitable from day 15. Freemium is still an excellent way to hook people on a service, because there's no risk to them. If they find your service truly useful, they'll pay without question.<p>I am, however, thinking of dropping the freemium model. Not because it wasn't successful, but because now that Scribophile has an established reputation, requiring an up-front payment would help keep out trolls or members who aren't interested in participating. The idea is to improve the quality of the community, not take a dive into my swimming pool full of gold coins. But I'm still pondering if that's the right decision.