AvestheForumFox has just started one, you can ask him if you can join. I assume he'll say yes but best to ask. It's at:
There are some active ones, just look in the Land Before Time RPG section. Look for ones that have been posted to recently. I know of 3 that are active and maybe there is 1-2 others.
I had a few ideas, though to shy to gm one. Though since mine are mainly based on the movies and tv episodes some may not be interested.