FeedPass is a site, similar to FeedBurner were you can promote your rss feed. The page that is presented for your feed, has many subscription options, like subscribing by email or web based aggregators. Here the page for my feed.
The one feature that is different than FeedBurner, is that you can use your AdSense id to monetize your content. This is also the feature that is a little controversial. It is possible to submit any rss feed and attempt to earn revenue, even if is not your content.
I would be upset if someone else attempted to make money from my content. That is why I am using the Non-Commercial Creative Commons license on this blog.