Temple of Ego
Here's a service that someone with more time than me should make: a personal aggregator that combines all your feeds from various services together into a timeline view. I first saw this here and I made my own here.
Things that mine doesn't do that would be great:
- Archive everything that rolls in off the feeds so you can go back in time further
- Import old entries
- Search within the article and page text
- Alternative views, timeline, group by topic, tag, etc.
- Spit out a combined RSS feed
- Let visitors filter sources (say I just want to see your blog and delicious)
- Let users easily add feeds to their own pages. Mine's pure hackery.
- Widgets and so on so embed this stuff in your blog, myspace, etc.
Of course this heavily leans towards the nerdy as hell demographic so I don't know how you'd make your millions. But it would be nice.