BrightEdge, an enterprise SEO platform provider, analyzed the 10,000 largest sites on the web and found a 33% surge in placement for Google's +1 button during the past few weeks. The company found that +1 buttons are now on 4.4% of those sites, up from 3.6% in June. Meanwhile, Twitter's plug-ins are displayed on 3.4% of the sites.
Both Google and Twitter trail far behind Facebook, whose plug-ins, most notably its "Like" button, are on about 20% of the sites' front pages. Note: Although the chart below lists Twitter's plug-in as a "Twitter Share," BrightEdge CEO Jim Yu says it refers to the Twitter tweet button.
[img src="http://sale-online.click/wp-content/uploads/2011/07/+1-Chart.jpg" caption="" credit="" alt=""]
To put +1's growth in perspective, Facebook's "Like" button showed up on 50,000 websites a week after the company announced a web-wide "Like" button last April. It was on more than 100,000 sites within a month. Twitter, meanwhile, made its tweet button available to publishers last August.
A Google rep declined comment on the report.