We've already testified that we're seeing an influx of Boomer-aged (and above) colleagues befriend us on Facebook. (See our column, "We're on Facebook,--R U?")

But now we've found some statistics to back up our findings.

The 35- to 54-year-old group of Facebook users grew by leaps and bounds, according to a 2009 Facebook Demographics and Statistics Report put out by iStrategyLabs, which focuses on interactive marketing.

The report found that age group experienced a 276.4 percent growth rate over the roughly six months since the company's last report.

What's even more interesting is that the 55+ bracket experienced a 194.3 percent growth rate.

The college crowd of people aged 18 to 24 remains the largest concentration of users at 40.8 percent, but that's down from 53.8 percent.

So if you think Facebook is kids' stuff, think again.

For the full report, visit http://tinyurl.com/8yoccn.