Please review my startup for bicyclists
silentbicycle: At risk of duplicating things others have said here -* If I didn't already know why I prefer steel to carbon, or aluminum, I wouldn't learn it from the site. It really doesn't give any rationale for different materials. It looks like you tried to explain the pros and cons of different handlebars, but it's a lot of text, and could be improved with pictures, showing different hand positions perhaps.* It may be a good idea to keep commuters in mind, perhaps factoring this in to "Bike Type". The equipment trade-offs are different. In particular, there are incidental accessories - reviews of (say) bike headlights would be nice, and I feel more comfortable getting that sort of thing online than a whole bike. You also don't have anything about singlespeed / fixed-gear stuff, another niche that might be easy to add.* You don't seem to have anything about bike size in there. "Clydesdale" riders (i.e., tall and/or heavy people) tend to need more durable parts, some people need extra-small frames, etc. This will complicate things tremendously, though, and being able to actually test-ride bikes in person is a huge advantage for LBSs.