On the bright side, in all the research being done on causes, we have discovered something related to how starfish populations might affect coral reef diversity.
The reuse issue is absolutely critical — it would be insane to write everything from scratch for each application, because it would take too long to redevelop each component.
If anything has been introduced into the XML that shouldn't be there, you'll see each successive roundtrip create an output that is a little further away from the original file (guitars.xml).
While FriendFeed may be a duplicator in some ways of other services before its inception, there's no denying that it's now the top social aggregator and a service that's gaining a lot of steam.
It's tricky, but not impossible, to create an easy-to-use UI that would let you mark bits of a web page, and have those turn into the titles and items of an RSS feed.