If a high-net-worth mate is your ideal, a plethora of dating sites offer an inventory of men who say they earn at least six figures annually. You can troll sites such as MillionaireMatch.com....., actor Charlie Sheen was a member of MillionaireMatch for a few months. Steve Kasper, marketing vice president at San Jose, Calif.-based MillionaireMatch, says the company never reveals the identity of its members, and that Sheen was outed by another member. Despite the drop in visitors, online-dating industry revenues have grown as companies raised monthly membership fees and membership lengths increase. Total US industry revenues rose 10 per cent to $659 million in 2006, and Jupiter forecast a compound annual growth rate of 8 per cent through 2011.