It’s no surprise that MySpace and Facebook were the first- and second-ranked social-networking sites on Compete.com’s list for March ’07 – in terms of both site visitors and “attention” (Compete’s word for percentage of their online time people spend on a particular site). What was interesting was that Bebo was No. 9 in terms of visitors and No. 3 in terms of the amount of attention it gets from its users. “Bebo, a relatively new player in the space, has more than tripled in both unique visitors and attention from March 2006 to March 2007,” the Compete blog reports. By attracting and engaging quality traffic, the site leaps from 9th ranked in Unique Visitors to third in Attention.” Tagged, targeting mostly teens and with more than 30 million members, is No. 5 in both categories. Interestingly, BlackPlanet, targeting African Americans and with 16 million+ members, is No. 4 in Attention and not quite in the Top 10 in terms of unique visitors. Google’s Orkut, which is huge in Brazil and ranks 8th in Attention, is only 22nd in terms of site visitors.