7 Startup Ideas That've Been Beaten to Death Sick of Groupon knockoffs yet? By Polly Davis Doig, Newser Staff Posted Jun 5, 2011 4:04 PM CDT 2 comments Comments Daily deals have been done so much and so well by startups led by Groupon that there's no room left at the inn for competition. (Getty Images) (Newser) – Sure, maybe the little kid down the block just happened to think of setting up a, um, limeade stand right after you started hawking lemonade, but in the real-life world of startups the consequences are somewhat more serious—and annoying. Business Insider runs down the seven moldiest startup trends out there right now: Daily deals: The field is clogged, and Groupon and Living Social have clearly won. No room at the inn. Dating: With Clique, eHarmony, Ignighter, Luv@FirstTweet, Match, OKCupid, and gazoodles of others out there, there is zero chance of coming up with something fresh. Even adultery's covered, notes BI. Check ins: There's Foursquare, Gowalla, Matchbook, MyTown, SCVNGR, Turf, and Foursquare and SCVNGR can "move in any direction and come out on top," notes BI. For the rest of the list, click here.