Another one from Jeff and the gang at Coupon Sherpa.

“After yesterday’s announcement that Living Social would add 25 cities to its deal roster (bringing them to 52 total), it’s clear that the “group-buying” phenomenon is more than just a fad. The model is genius in its simplicity: Sites find local businesses willing to provide large discounts in return for spreading their names to new customers. Consumers log on daily, check out their hometown’s deals and either sign up or ignore the deal. But as this trend picks up steam, more and more competitors are coming on the scene. How do you know which one’s for you? Today we’ve rounded up the top 9 group-buying sites currently online, summarized how they operate and offered a quick review from our own experiences. Enjoy, and happy shopping…”

Read the article in its entirety at Coupon Sherpa