I was thinking about the effects of blogs on existing mailing lists and news. And how to bridge the two worlds - I'm used to get information by a specific subjects, not by author.

Of course, someone else already did that on sourceforge - http://www.methodize.org/nntprss

Update: it works pretty well - not perfect, but far better than any other agregator I've
tried so far. Using a familiar interface ( the news reader ) is very nice, but the real potential is in bridging the blog and news/mail worlds. More on that later - I feel this is extremely important to explore - the relation between weblog and mail/news and the effect on communities.