I'm pretty late to the game with this one but I've recently discovered Bloglines, an online weblog feed aggregator. I've been using JetBrains Omea for the last couple of months or so and was quite impressed with its performance and usability.
Last week though something mysteriously went wrong with Omea and as a consequence I lost my subscriptions. Not even a database repair could help in recovery. I took this as an opportunity to take a look at what else was new in the aggregator world and came across the afore mentioned website.
It took me a short while to get used to the web-based UI but for the mere fact that I can login in anywhere and continue to read my feeds where I left off is what has got me hooked.
Also, rather than maintain a local cache of my feeds and one here posing as my links I can now point out to my public subscriptions list at Bloglines.