We actually do get a very limited number of MoGas locations, and there are very few on other Aviation Fuel sites. We researched accuracy, price and fuel types when selecting the database we have. I'm very familiar with the pure-fuel site, although it seems to cater to the farmers and boaters looking to avoid ethanol.
As Walter mentioned, we have it in our plans to possibly add a pilot reportable fuel function to help enhance any databases we add. Fuel prices are not cheap, and they are only as accurate as the reporting entity or the fuel facility's report frequency. We feel this can be improved upon and better serve pilots to merge several database sources and add this pilot fuel report function.
Thanks for all your feedback, we'll take it all into considerations when improving this functionality.