Twitter unveils self-service advertising system (AP)

[unable to retrieve full-text content]AP - Buying ads on Twitter is about to get easier for small businesses as the online messaging service adds a key piece to its moneymaking model.

Source: http://us.rd.yahoo.com/dailynews/rss/tech/*http%3A//news.yahoo.com/s/ap/20120217/ap_on_hi_te/us_twitter_advertising

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