This might be trivial. One of my friends is a serious blogger (she has around 7-8 blog sites on various topics she writes). Why not a simple blog aggregator to

This might be trivial. One of my friends is a serious blogger (she has around 7-8 blog sites on various topics she writes). Why not a simple blog aggregator to post in blogs into the site you wish? E.g., You want to blog for tumblr, create a post here and then it gets auto-posted to tumblr directly. Of course, the API issues and permissions are another headache to worry about.