The problem with all these graphing libraries is that it's non-trivial to post the graphs elsewhere. If you have a data driven website then your users are going

The problem with all these graphing libraries is that it's non-trivial to post the graphs elsewhere. If you have a data driven website then your users are going to want to share your graphs on facebook, twitter, forums. If you don't make it easy you're giving away a huge amount of free traffic.