Left wing group ColorOfChange.org is reporting that their advertiser boycott has cost Glenn Beck more than 50% of his ad revenue.

Estimated advertising revenue [the total amount of advertising money being spent during a block of commercial time for a program] was collected on a week-by-week basis for a period of two months. According to the data collected, the amount of money spent by national advertisers on Beck’s program per week was at its highest at approximately $1,060,000, for the week ending August 2, 2009. ColorOfChange.org launched their campaign at the end of that week and since then, 62 advertisers have distanced themselves from Beck. Data collected for the week ending September 6, 2009 shows Beck’s estimated ad revenue at $492,000, equal to a loss of $568,000. …

The following is a list of the companies who have distanced themselves from Glenn Beck: Aegon, Ashley Furniture, Airware Inc. (makers of Brez anti-snoring aids), Allergan (maker of Restasis), Ally Bank (a unit of GMAC Financial Services), Ancestry.com, Applebee’s, AT&T, Bank of America, Best Buy, Binder & Binder, Blaine Labs Inc., Broadview Security, Campbell Soup Company, Capital One, ConAgra, Clorox, CVS, The Dannon Company, DirecTv, Discover, Ditech, The Elations Company, Experian (creator of FreeCreditReport.com), Farmers Insurance Group, GEICO, General Mills, HSBC, Humana, ICAN Benefit Group Insurance, Infiniti, Jelmar (manufacturer of CLR All-Purpose Cleaner) Johnson & Johnson (makers of Tylenol), Jordan McKenna Debt Counseling Network, Kraft, Lawyers.com, Lowe’s, Luxottica Retail (retail parent of LensCrafters and Pearle Vision), Men’s Wearhouse, Mercedes-Benz, NutriSystem, Procter & Gamble, Progressive Insurance, RadioShack, Re-Bath, Regions Financial Corporation, Roche, Sam (Store and Move), SC Johnson, Sanofi-Aventis, Sargento, Simplex Healthcare (creator of the Diabetes Care Club), Sprint, State Farm Insurance, Traveler’s Insurance, Travelocity, United States Postal Service, The UPS Store, Verizon Wireless, Vonage, Wal-Mart and Wyeth Consumer Healthcare.