Are you only pulling Strikeforce and UFC events? Are you thinking at some point pulling from more sources? For instance, Sherdog's event calendars and the like?
Right now i'm only pulling Strikeforce and UFC. Since the events are updated manually i don't really have the time right now to research and maintain cards for so many promotions. Perhaps with the use of something like mechanical turk it could be made manageable without breaking the bank.
I was trying to avoid scraping sherdog since i'm not sure of the legal ramifications of doing so. Felt a little bit safer using wikipedia.