Having said that, I haven't had much success. Although I've had a fair amount of traffic and a significant number of comments to the effect that my site is really well executed, I haven't had any sales so far two weeks after launch. I guess it's early days but it's hard not to be disheartened and question if the idea is viable. It's hard working alone and not having anyone to motivate and bounce ideas off of.
My site is http://www.devtest.net if you're interested in having a look.