It could look like Twitter opening up its fire hose for unfettered 3rd party analysis and development - then you'd see social graph and content analysis done that gave a big boost to the User Experience on LinkedIn. "This LinkedIn user has been conversing with friends on Twitter who were talking about 'mobile,' 'Wisconsin' and 'gaming' over the last 2 weeks." Whatever the case may be, both occupational data (LinkedIn) and social messaging data (Twitter) are rich green fields for mashups and analysis - but these two companies are holding back the tide of innovation by refusing to offer a clear path to their data by outside partners. Full Article at ReadWriteWeb