Google has recently acquired FeedBurner and if you currently have your blog feeds on FeedBurner, you may want to move your feeds to the new site.
From the official FeedBurner site:
What does this mean for FeedBurner’s partners, advertisers, and users?
We are excited to continue offering FeedBurner’s excellent tools to content creators throughout the world, and our teams will work together to improve the experiences of feed users, advertisers, and publishers. Users can continue signing up for FeedBurner’s services and immediately take advantage of their feed tools and features. In addition, advertisers can continue to leverage FeedBurner’s media network to achieve their marketing objectives.
I recently moved all my feeds over to the new site, and although I thought I lost about 500 subscribers for a while, everything is back to normal. The transition is easy; log in to your FeedBurner account and follow the instructions to move your feeds. If you don’t have a Google account, you will need to sign up for one; otherwise, log in with your Google account. Depending on your blogs and subscribers, it may take a while to complete the move. Once your feeds are moved to the new site:
you will then log in to that site to check your feed stats. From what I can tell, the site interface is the same as the old FeedBurner site.
Once you get the feeds moved, you will have a different URL for each blog. Currently, the new site redirects the old FeedBurner feed URL to the new one. But I strongly suggest you check the new feed URL and make the appropriate changes on your WordPress blog or anywhere you have a link to the old feed, including any FeedBurner plugins installed. It seems the FeedBurner plugins are still working and the only change to them is where you “Burn” your feed. So don’t be alarmed if you log in to FeedBurner.Google the site and see that your subscriber numbers are very low. As I said above, I thought I lost about 500 subscribers, but in about three days, all were back and then some.