From June 22 through June 25, 2010, Rayovac is sponsoring Rayovac Powers Your Summer Blogger Promotion. The first 99 bloggers to promote the Rayovac Powers Your Summer Promotion won a prize package from Rayovac. Here's the link to the official rules for the blogger campaign. They will also be holding a Twitter event on June 30th again, The first 99 bloggers to promote the Rayovac Powers Your Summer Twitter Event won a prize package from Rayovac.
There is also a chance to win daily prizes by following them on Facebook and answering a daily question. The rules for the Rayovac Powers Your Summer Promotion on Facebook can be found here. The promotion runs June 21, 2010 (CDT) through 11:59 p.m. (CDT) on July 20, 2010