I like the comment idea, but focused on the user posting. For example, I'd like to put up a page in my blog that aggregates pretty much everything I've ever wri

I like the comment idea, but focused on the user posting. For example, I'd like to put up a page in my blog that aggregates pretty much everything I've ever written online, ever. That way, I could have a "collected writings" page that will show my comments on various blogs, on HN, on reddit, maybe reviews I've written for Amazon, etc. There are some technical difficulties with doing this automatically (how will you find every comment I ever post on any old blog?). But this would definitely be a cool way to aggregate all my writing into one place. It could also have controls letting me exclude certain writings, etc.