Meet Groupon's groupies

If you like keeping tabs on the best deals but can't keep track of all those sites, you'll like Yipit, a startup cofounded by Harvard grads Vinicius Vacanti and Jim Moran, that handily filters and aggregates deals from 397 services, including many of the ones mentioned here. Best of all, when you get those deals sent to your inbox every day, they're compiled into one handy email. To date, it's raised $1.3 million from venture capital firms like Ron Conway's SV Angel and RRE Ventures.

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