Apparently, overseas, there are social networks other than Facebook and MySpace. Who knew? Read/WriteWeb mentions that social net Hi5 which tallies 35 million uniques per month according to ComScore, making it competitive with Facebook. And yet the name will draw blank stares at a Silicon Valley tech meetup. Like Google's Orkut, Hi5 is huge overseas and virtually nonexistent in the U.S. Hi5 even launched a developer API in August, but got scant coverage from the Web 2.0 crowd. The bias, of course, is partly driven by economics. Tapping overseas advertisers is tough, and so developers planning to build ad-supported websites and applications naturally turn to U.S. markets. But media myopia is a factor, too. Until magazine editors' teenage daughters start using it, Hi5 is likely to remain invisible.