Twitter has bought 900 patents from IBM and entered into a cross-licensing agreement to limit the threat of future lawsuits.  The move comes after IBM accused Twitter of infringing three of the company’s patents concerning: “efficient retrieval of uniform resource allocators,” “presenting advertising in an interactive service” and “programmatic discovery of common contacts.”

IBM noted at the time that it would rather talk it out instead of lawyering up, while Twitter claimed it could defend itself against IBM’s allegations.  The deal will provide Twitter with “greater intellectual property protection” and “freedom of action to innovate,” meaning it’s business as usual for users.