I'm on a suggestions roll...
Here's something I've been thinking of for a while, especially since I saw
http://180n.com. If you haven't seen it, take a look. It's basically a site where people can vote on news stories they are interested in, but the news is provided automatically by RSS feeds from Yahoo, etc.
I personally prefer the Digg/Pligg style of humans submitting and commenting on stories, but a big problem with getting sites like these off the ground is that you get few visitors if you don't have a lot of stories/votes, and you get few stories/votes if you don't have a lot of visitors. So my solution would be to import RSS feeds for each category from the start so you immediately have content to attract visitors. You could eventually get rid of the automation once you have enough members submitting stories. My view of the process is as follows:
// In a config file, input keywords for each category that are likely to return lots of relevant results.
// Set up a poor man's cron job to pull in a (e.g.) Yahoo search RSS feed (using the keywords) for each category. I.e. With every view of the top page, check if the script has been run in the past hour. If not, then run it.
// Parse and insert the stories into each category's section setting Yahoo as the submitter.
// When the story is viewed, Yahoo's (or whoever's) logo must be displayed and the submitter's link must be changed to point directly to Yahoo. You could also add a note to clarify that this story is an automated submission. Incidencally you'd have to join Yahoo's developer club thing to get an API key.
There could be some gaping holes in this plan so if you have any criticisms/improvements or alternative ideas, please let us know.