Although it came out in May, I just discovered that reddit (whose main site I've used for a while) provides a web-based feed aggregator along the lines of a Bloglines or Google Reader but with the added feature of their voting system. Plus it integrates nicely with the main reddit functionality. Pretty cool stuff.
Check it out at http://feeds.reddit.com/
They offer import of subscriptions directly from Bloglines but it wasn't working for me when I tried it.