Adding a Feed - What should the experience be like?

I just implemented a set of features to add new feeds to your list, these are the three scenarios I was targeting:

1. Enter feed URL directly
2. Enter feed search terms
3. Browse list of top feeds

Numbers 1 & 3 have been implemented, but I'm thinking about saving scenario #2 for v.next. What are you thoughts? Do I have the right scenarios? Do they work the way you would like them to?

BTW - the best feed so far is the dilbert comic strip, i love the way it renders. Check it out, it is filed under "Humor" ;)