Think you know Twitter? These little tidbits may redefine the way you regard the micro-blogging service.

Twitter Doesn’t Want to Kill All Third-Party Services
This is one bit of news I’ll take with a grain of salt, but according to Twitter’s CEO, Twitter would prefer that all those services accessing Twitter’s APIs move into what they call “value-added services.” In other words, stay out of Twitter client building because Twitter has that covered.

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Twitter Will Build out More Services
Twitter just introduced a photo-sharing service, which puts competitive services on notice. Twitter’s Costolo readily acknowledges that much of what Twitter will develop will overlap with services from third-party products. Sorry, does that obviate our previous “fact?”

Twitter is a Successful Business
I love Twitter, but have always known that unless it becomes a real money-making business, it cannot survive. I guess I can stop worrying. At the D9 conference, Costolo actually characterized Twitter as a “very” successful business. “Over 80 percent of advertisers who have advertised on Twitter come back and advertise on Twitter,” said Costolo. That’s a great percentage, but perhaps more importantly, the reported “engagement rate” is 52 percent, which Costolo said is orders of magnitude greater than traditional advertising. Costolo did not share actually revenue numbers. For now, I guess we’ll have to take him on his word MCITP Training.