While interest graphs are new for big companies like Twitter, whose announcement was reported in OnlineMediaDaily on August 30, San Francisco-based 140 Proof has already been providing interest graphs ...

Social curation startup Pearltrees has just sealed a deal for €5 million (around $6.6 million), all in the name of creating a better interest graph. Much is being made in current social media circles ...

Lured by the promise of better “interest graphs,” investors just ponied up about $6.6 million for social curation startup Pearltrees. Great, but “what the heck is an interest graph?” asks VentureBeat.

Twitter's tweaking its "promoted tweets" to use info about the people you follow for targeted ads. It's a case of brand new tech applying an age-old marketing trick, and it just might work.