LinkedIn had 8 million US visitors in July this year, an increase of 66% compared to a year ago, according to Comscore.  By cross-referencing visits to job-seeking sites with visits to LinkedIn, estimated how many of LinkedIn’s visitors are job seekers:  the average LinkedIn user is 2.4 times as likely as the average Internet user to be looking for a job. A full 28.5% of LinkedIn’s users are looking for a job. More at Royal Pingdom.