I've built a site to review & rate beers. It needs some further work & improvements, but I got it out the door. Better to release than to polish to perfection.
There are a number of existing beer rating & review sites. They tend to be a bit dated, but they have great usage.
I've been told, and am a firm believer, that if you take something that already exists and make it better, then you can do well.
But how do you tap into this existing market? People are adverse to change. And are risk adverse. Changing services & losing existing catalogs & data is scary.
All advice welcome.