The below article is mostly about MOnster.com, and it's international presence.
However, as someone who is closely following the job market, I found some interesting points about increasing online job ads lately. Also interesting is the graphic of what percentage each of the job boards captures. I wonder where Craigslist falls?
http://online.barrons.com/article/SB125332142936624651.html?mod=BOL_hpp_mag&page=sp#artCommBookmark"Turning Into a Monster of a Competitor "
By Monster's reckoning, online job postings in August rose 6%, the most since 2005, with the Monster Employment Index hitting 121. Sommer says that Monster's North American business, which accounts for 48% of revenue, is closely related to that index, meaning that it probably went up by a like amount. Last year, Monster's North American revenue fell about 10%.
...
The Conference Board reported employer job demand up a seasonally adjusted 5%, or 169,000 jobs last month, compared with July's level. "The August increase was some very good news," says June Shelp, a Conference Board economist.
Since April, online job demand has risen by 300,000, with many larger states showing stable trends, the Conference Board reports. "Advertised vacancies tend to be a lead to what's happening in employment," notes Shelp.
...
Monster commands about 30% of the North American online job-search market of about $2.3 billion, second only to CareerBuilder's 35%, Sommer says, and 20% of the overall North American market of $5.3 billion, including print advertising, to CareerBuilder's 23% and HotJobs' 10%.