Every few months, we revisit the latest thinking on software-as-a-service. Last time we wrote When the Solution is a Service Everyone Wins. This time we’ve got a potpourri of opinion and thinking on the greener SaaS side.

Market and Revenue. The Wall Street Journal responded to Taleo’s acquisition of Vurv with an interesting analysis and chart in Web-Service Firms Take Non-IPO Routes. They state: “Most software-as-a-service companies are still growing more quickly than traditional makers of business software, whose products must be installed on a customer's server systems.”

Environment. Intacct’s Going Green with SaaS blog entry reaffirms the common sense point that SaaS customers running in a multi-tenant environment are helping reduce the amount of electricity used versus on-premise software. Dan Druker says he’s seen numbers that estimate savings as high as 20:1.

Horses. And Phil Wainewright’s Software as Services blog weighs in with The four horsemen of SaaS. He also echoes the theme of market growth when he says: “…people management sector — one of the hottest segments of the enterprise SaaS landscape.”

So it seems SaaS is good for customers, vendors, and the environment. Once again: everyone wins.