Marcelo Saralegui tag sponsored by:
Build your newsfeed from an index of the current open web, classified with 100mm tags (topics, linkers and more) and overlaid with your custom ranking algorithm. Tune your algorithm to your personal interests and get your newsfeed via web, email or RSS.
While Twitter is figuring out their API strategy, I'm holding off on new registrations. I hope to open up again soon!