You don't need to partake in any RP down in roleplay threads before starting one(s) of your own. I find that taking in part in one or two doesn't hurt though, at least if your new to the concept of doing one on a forum. I have seen some people come in and start their own without taking part in any others, and some members who frequent the area rather heavily are more iffy to join because they haven't seen what you can do.
Great! I guess I'll just have to make a good first impression with the recruitment thread.
Sausages, hands down
Good call. However, the trick-part of the follow-up question; would your answer change in a zombie apocalypse?