Here's another POWERFUL hack, suggested by Bomber Jeff Hope a while back.

This hack finds vBulletin forums that have a blog plugin that allows forum members to create their own blogs. The Warrior forum is one example.

Why this is so powerful is because each blog has its own RSS pheed. This gives you the ability to have tons of RSS pheeds, so you can submit them all.

Here it is:

"Blogs From The Members of" + "Find Blog Entries" + keywords

When I did the basic search, Google returned 14,000 forums. This means, there's 14,000 more sites where you can create a blog with your own RSS pheed.