Pinkberry has added a watermelon fro yo to its stable of tart yogurts for the summer. To celebrate, Pinkberry is offering 50 percent off all any of its creations with the watermelon flavor between 5 and 7 p.m.

This offer is expected to last through the end of August -- or whenever they run out of watermelon.

Local Pinkberries can be found at:

• 2100 Arden Way (Howe 'bout Arden shopping center)
• 7405 Laguna Blvd (Laguna Crossroads in Elk Grove)

Find one near you at http://www.pinkberry.com/storelocations.html

PS: Pinkberry is one of the few restaurants to "get" foursquare. Check in there and get 10 percent off your order. Not sure if these discounts are stackable. If you get it to work, let us know in the comments below!