You can create 250 character jots on Subjot and post them to Twitter and Facebook. There is also a bookmarklet that lets you share to Subjot/Twitter/Facebook from anywhere on the web.
I'm actually not following what Subjot does (can't understand via the text blurb) and I'm not enthusiastic about logging in on any new service via Facebook/Twitter. So I'll wait for now.
Thx. Well, one thing is common here that I too have a lot to say on many topics and one common denominator (either Facebook or Twitter or whatever) is not a suitable choice (hence I use different platforms for different topics but I know its not totally effective).
It's an ideal concept to sort various different interests of a single person interest into separate containers based on target audience. I think Google+ came close but their naming policy sucks. I wish they'd allow different identity/per-Circle, which could help resolve this issue. But in perspective, I should be able to target my audience based on their interest as I know best and vice-versa. Twitter is totally ineffective here to most degree.
I love your comment. I have been studying identity and the internet for years. Subjot doesn't solve the problem of easily posting from different identities but I do promise to respect people's identity and have internet friendly policies.