Thank you everyone for your input. I would like to get into badfic sporking... I just want to make surer my characters are good, and the sample writing thing has put me on edge, seeing as my last attempt was more or less a flop. I'll still be working on it, though,

And one more thing- my last question inolved the exorcism of video games, and I guess I should clarify. See, I don't actually play a lot of video games, nor do I have some of the systems/games for the ones I do like, so I'm wondering what I could use for exorcisms. Maybe my other agent could have a few...

There are plenty of websites where one can research the various canonical aspects of video games. Major games such as Left 4 Dead, Halo, or Kingdom Hearts almost always have their own Wikis.

It also helps if you can get a beta reader with experience with the game in which your fic is set.

I'm somewhat a newbie myself, but I'll try to answer all the questions to the best of my ability.

To be "eligible for sporking", aka take on missions, you have to hang around the Board at least a month, be active so people get to know you, and then post a Permission Request entailing a short description of your agents, a Permission Request itself (can be anything from a simple "Hey, I would like to write missions." to an elaborate hundred sentences like "I solemnly swear to banish the evil that is the MarySue whereever I encounter it in the Word Worlds."), and a writing sample to show that you have a good grasp of English grammar, spelling and vocabulary. Can be PPC-related, but doesn't have to be. You could for example choose an essay you wrote for school which you are very proud of.
Then the Permission Givers will either give you Permission or not, in which case they will explain what you lack in their eyes.

About new recruits: It depends. Whoever rescued them from a fic has the ultimate say in things. Go ask them.

To exorcise Video Game badfics you need a CD-ROM or something similar with the game on it (Canon Material), and depending on you, candles, bells, chimes, incense and the like. The character to be exorcised is hit with the Canon Material and variations of "Get thee out! The power of (original author) compels you!" until the Author-Wraith appears and is charged and slain.
To handle missions in continua, you need a working kwnowledge of them. I am not sure if you have to play them, but I don't think so. You just have to be able to tell what's Canon and what isn't.

I hope this helps. The wiki is also a good place to look for answers.