One of the nice things about working online is that you can have multiple streams of income coming in, so that when one area might be slower, another will be there to fill in the gap. Here are a few more possibilities that you might want to check out:
Usability Tests (These websites pay you to test out different companies’ websites, and provide feedback on your experience. They mostly pay around $10 per test.)
Online Jury Focus Groups (exactly what they sound like… these allow you to serve on a jury and give your opinion about a case, online. These pay anywhere from $30 to over $100)
I will add more to this list as I find them!