I've been messing around with my blog as a hub of stuff, but think I've finally got it working the way I have in mind. I use asides for more-than-twitter but less-than-blog-post entries. I now have delicious.com exporting daily linkdumps into a Links category. Neither of these 2 things show up on the front page of the blog, nor in the RSS feed. But they ARE archived on the blog, and are searchable. Persistent archive of stuff, without the noise and ugly mess. I'm using Advanced Category Excluder to prevent the 2 categories (asides and links) from showing up on the front page and main feed - although they still have their own feeds through the category system.
Update: I decided to put the delicious.com daily link posts into the RSS feed after all, but not on the front page. Not sure if I'll leave it that way or not...