Social-Networking Service Looks to Expand Slide has become one of the most popular services on the web, building tools for social-networking sites. But as WSJ's Jessica Vascellaro reports, its successful applications, which are visited by 160 million a month, haven't translated into proportional revenue. (Oct. 1) Social-Networking Service Looks to Expand Slide has become one of the most popular services on the web, building tools for social-networking sites. But as WSJ's Jessica Vascellaro reports, its successful applications, which are visited by 160 million a month, haven't translated into proportional revenue. (Oct. 1) Slide social-networking FunSpace Jessica Vascellaro web Internet applications traffic MySpace