7 Startup Ideas That've Been Beaten to Death

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. (More Internet startups stories.)