More than three-quarters (77%) of the Top 100 global brands had a Google+ page as of December 19, 2011, up 16 percentage points from the 61% that did so a month earlier, according to research by BrightEdge Technologies.

By contrast, 93% of the Top 100 brands, based on Millward Brown's BrandZ Most Valuable Brands for 2011, now have a Facebook page.

Some 16 of the Top 100 brands turned on Google+ pages in the previous month.

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