I am cynical. What's your angle? I presume that the idea here is to find open source projects to become heavily "invested" in, and then find ways to extract out a commercial offering, whilst engaging in (free) open source labour? Sorry for the cynicism, but offering only $2500 (+things of variable value) sounds like you are trying to target desperate people to take advantage of almost. Ie. If an open source project grew a commercial element, it's going to be worth a bunch more than that. Please, I stand waiting to be corrected. Thanks.