Why do you need funding for a FB app?<p>Do you really need funding, or do you need financial motivation to do the work?<p>I would suggest if you really do need some funding for some specific costs, you should take as little as possible :)
I got this advice from someone when I was considering applying to AppFactory.<p>"I would say multiply the number of team members by the time period you're asking to be funded over, by a very high valuation of your team members' time ($75/hour, say), and add some server costs."