Web2.0 Products I need :-)

Richard MacManus has an interesting article about Web 2.0 Products We Need (But Which Don't Exist Yet). Regulars of this blog will already know my list, but here it is in titles (all 3 of them!):

1. A service that will let us mix feeds according to user-defined rules.
2. Wider use and services that take advantage of geo-tags.
3. A microformats-aware search engine.