Since I bought an iPad I'm using Google Reader and tracking more RSS feeds/blogs since it's such a convenient device for consuming information on the web.
I'm a big fan of the iPad Reeder application which syncs with your existing Google Reader account including tracking what you've already read and starred. Reeder is $4.99.
There are many iPad RSS/News readers available both paid and free. TCGeeks has a good review of what's available.
Here are the categorized RSS feeds/blogs I follow using Google Reader and Reeder for the iPad: