These are the festivals I attended in 2012, click the links for reviews:
March 2nd-4th. Snowball Music Festival. Vail, Colorado.
March 8th-11th. 35 Denton. Denton, Texas
March 12th-17th. South By South West. Austin, Texas.
April 13th-15th & 20th - 22nd. Coachella Weekend 1 & 2 Indio, California.
May 17th-21st. Symbiosis Gathering. Pyramid Lake, Nevada.
May 24th-28th. Lightning In A Bottle. Lake Irvine, California.
June 7th-10th. EDC. Las Vegas, Nevada
June 28th-July 1st. Electric Forest. Rothbury, Michigan.
July 3rd-July 8th. Summer Fest. Milwaukee, Wisconsin.
July 12th-13th. Camp Bisco. Mariaville, New York.
July 19th-22nd. Firefly Music Festival. Dover, Delaware.
August 4th-5th. Hardfest. Los Angeles, CA.
August 8th-13th. Outside Lands, San Francisco, CA
August 27th-September 3rd. Burning Man. Black Rock City, Nevada.
October 5th-7th. Y0utopia Festival, San Diego, CA.
October 26th-28th. Lunacy Festival. Santa Barbara, California.
December 29th-31st. Snowglobe Festival, Lake Tahoe, NV