Great question. There aren't any defined conditions, as this what I've put up is a MVP itself heh. As long as it's reasonable and can be built in rails3 is the initial condition;

Of course, after I get a certain number of applications I'll have to review them and contact each individually and a lot of people are obviously going to look at what they need and whether I can deliver that in a reasonable time frame.

Short answer: (and I hate to say this) It's relative, tho I won't spend more than 33 hours on a project.