Reuters reports that Yahoo Finance has released thread ratings to its stock message boards. Thread ratings is a fairly basic feature of most standard message board software systems, and is a very nice touch to add here.
You can view some rated posts by looking at YHOO Message Board (you may have to click the yellow "continue" button). Right off the bat you will notice a filter drop down "minimum rating," allowing you to filter out the good posts from the bad. More information on that filtering here. You can also easily sort by rating, by clicking on the average rating column. To rate a post or a thread, just click on the one of the five stars and presto, the thread or post is rated. It is also important to note that these changes come shortly after Google released Google Finance.