Twitter will soon attach value ratings to users' tweets. Here's why.
The value judgements will be assigned to the public metadata of tweeters' posts, and used by Twitter's streaming API to help developers more selectively curate massive amounts of status updates.
===> Designations of "none," "low" and "medium" will most likely debut on Feb. 20, according to a post by developer advocate Arne Roomann-Kurrik on the Twitter developers' blog. A "high" value option will be rolled out sometime after the initial batch. <===
Via Gust MEES