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StockTwits Tightens Posting Rules

San Diego-based StockTwits, the online community for posting and sharing stock related messages, has tightened its posting rules, saying yesterday that it will now require users to create their an account in order to message on the firm's streams. The firm offers up stock-related micro messaging services, similar to Twitter messages but categorized and sorted by stock symbol. The firm said the new requirement will help it implement feature enhancements, including member follow and block features, and improved tagged message filtering. Although the firm did not mention it, the rule will probably cut down on anonymous postings to the service by unscrupulous individuals, a problem endemic to stock message boards and sites.