"A purchase of Twitter by Google would allow a company that already knows too much about us to find out even more. And sell it to people who could aggressively use our words to pester us. Or worse.
Lacking any obvious way to make money, Twitter must be looking for ways to turn its search engine into a major revenue stream. How can Twitter do this in a way that users won't find obnoxious? Facebook has not been able to do it, and slides from controversy to controversy as a result."