Community site Green Grid is rated by New York Times as one of the sites IT professionals should put on their must visit list. Rising popularity of Green Grid site shows that Green IT is a cost management initiative. Initiative has less to do with oil price dynamics.

With the economy in shambles and energy prices plummeting, you’re likely to hear a lot less about global climate change and carbon neutral business operations than you did six months ago. Nonetheless, green IT can still be a huge advantage for IT departments because it will save you money. Plain and simple: green IT saves greenbacks. So get to know the Green Grid’s Web site and make sure that whatever you buy in 2009 for your data centers is in line with their advice and metrics. Here’s more information about the Green Grid along with three other organizations that offer advice about lowering data center power consumption.

Other sites to master include Twitter, Yammer, Google App, VMWare Communities, Secunia, Ruby on Rails, Enterprise Mobility Matters and LinkedIn.