BCBUSINESS - Oct 21 - POF grew into one of the world’s most popular dating websites. Despite the popularity of its iPhone and Android apps, POF's old revenue model is under siege, as advertising doesn’t work well on the smaller screens of smartphones. POF will need to evolve to survive. POF CEO & Founder, Markus Frind, says that for people under the age of 35, 90% of POF’s visits now come from phones rather than web browsers. Frind says up to 60% of the company’s “tens of millions of EBITDA” still comes from its website. POF’s apps make money from upgraded memberships Frind is the first to admit monetization on mobile has a ways to catch up. Mark Brooks, one of the Internet dating industry’s few consultants, says that while Frind will never have the deep pockets of IAC, POF’s mobile numbers are promising. Now he just has to figure out how to make mobile visitors as valuable as its declining desktop ones. Brooks points to Craiglist for inspiration. “Most people think it’s entirely free,” he says, “and it is—except for people who want to advertise jobs, and they make a lot of money from that. Mobile is pretty much a land grab right now,” he says. “Grab as many users as you can, then figure out what to do with them.”