Acanthus82:
I don't know if I'm just complaining or if someone out there can offer me some helpful advice. I'm about to try to start up another game, but I'm anticipating failure.
You are entirely too pessimistic.
Much of picking/committing to a game, whether as a player or as GM, is within your control.
i) If you have a core of players that you know, no problem! A core group will stick it out when things get tough no matter what the Rules System. Unfortunately, in PbP, it can be difficult to gather a faithful group.
ii) Don't pick games for which players won't purchase the Rules, are difficult to teach or to learn, are not supported by RPoL, require a lot of RL background, or will take a lot of RL time to play (for any reason). You are asking for failure. Research the game.
iii) Reaearch the GM. If he is running 8 games concurrently, has 25 deleted and/or inactive, beware.
iv) If the GM doesn't mention conditions for RTJ, like samples of writing, or picking and choosing the best applicants, take care. (The game fills up in 3 hours of real time, most of those fast players will surely drop out and apply for their next 15 games almost as quickly. It's the grass-is-greener syndrome).
v) Keep talking/corresponding with the GM and the other players regularly. Isolation in RPoL is everyone's enemy.
vi) Don't be boring or predictable. Be clever with your characters (and NPCs).
I'm in several games with over 20,000 posts...