Aggregator sites... how you doing it?

I've though about testing one but was wondering how some of you are doing this? Any plugin you are using. Just wondering what tools you might use. Can it be done by keyword only... for a niche, so you not blasting BS on your site and isn't relevant?

I haven't play with this at all yet so would really like to get some comments and points to start something like this. I'm sure it isn't as easy as 1-2-3, but if someone could help with some ground work and what direction to start with would be great.

Do you mean Auto Blogs? There is plenty of information on them in the blogging section, including a very helpful video tutorial by Shezboy.

Just wondering how some run those gossip type sites... how are they pulling that content. I have an idea that I would like to test, but not on gossip, just don't know how to pull the content... are they getting it from RSS feeds? And if so, can you filter what you post by keywords?