Re:Fourth big challenge (Score 1)

Rightly mentioned. There a lot of open source projects that started off with a wonderful idea but down the line have somhow lost vision and ended up being un-supported anymore. I think this is the place where commercial organizations shine. Their releases are well controlled and gives the third party vendors to time theirs too. This is where mozilla missed out. Now I think they are in a better shape than they were earlier. So i think another major challenge for an open source project to keep going is to keep the goals attainable and make sure that things keep chugging along.