When Twitter was crippled by cyberattacks, Google was glad to offer its assistance. But you don't think the search giant's motivations were purely altruistic, do you? Silicon Alley Insider writes that Google has never hidden the fact that it's interested in buying the micro-blogging service, and that saving the day should help them get on Twitter's good side. The article also notes that Google's immense infrastructure would work wonders for Twitter. Still, all signs point to Twitter's owners being focused on remaining independent.