Social networking growth patterns in Australia makes for an interesting case study for parents looking for a bigger picture. MySpace has 3.8 million profiles in Australia, while Facebook has 141,000 Australian members. But Facebook grew by 273% in Australia between April and June, putting it in that country's top 5 online communities and "outpacing the industry leader," Australian IT cites Hitwise as reporting. Hitwise found that 18% of Facebook visitors arrived there directly from Hotmail, "where they may have received emails from friends asking them to join Facebook," and "nearly 10% came directly from a MySpace page." They're not abandoning MySpace, though, Hitwise added - there's just "a lot of crossover." "Twenty-three percent of MySpace traffic came directly from Google Australia."