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.
Good Idea. But I'd say it should be the other way around. Focussing on developers (the lower salary cream), higher the developers in the meeting, greater the loss. (Higher people are busy in meetings throughout anyway..)