The Best IM (Overall) category in About.com's 2012 Readers' Choice Awards measures the year's best instant messaging programs. Learn more about the Best IM Overall category and what makes a great instant messenger here.

Cast Your Vote for These 2012 Best IM Categories

• Best Windows IM
• Best Mac IM
• Best Business IM
• Best Web Messenger
• Best iPhone IM App
• Best Android IM App
• Best Blackberry IM App
• Best IM for the Mobile Web
• Best Webcam Chat
• Best Chat Rooms

Vote for the Best Instant Messengers today! The voting period closes Wed., March 21, 2012.