The site has gotten so much better over the years, adding the ability to have shipping at checkout was a major hurdle. It has seemed like they've really been investing in development over the past 2-3 years. Everything was a bit stale and then really started to show signs of life. A lot of it's is like Wiki since it's user submitted and curated but man if it isn't slicker than other options. It also destroyed early sites like GEMM.

I've always been a big fan of their transparency and support as well, you can get downloads of the entire database, freely available, on a regular basis with no hassle. They know it's not about the data, but the community and experience.

Weird seeing them on HN, seems like 10 year old, moderately profitable companies aren't as common around here.