There are already graphing sites out there, but they're more data oriented than calculation oriented (not sure if that makes sense). But basically if you could

There are already graphing sites out there, but they're more data oriented than calculation oriented (not sure if that makes sense). But basically if you could hook the calc up to a graph and make them really easy to create and share you would be able to get some virality. If you had a ton of graphs out on the web with ads on them you (like millions of them) you could make some money.