Another day at Dreamforce and another big annoucement from salesforce.com. This time it’s the acquisition of the Ruby on Rails cloud platform Heroku. It’s clear that salesforce.com are positioning themselves to be the cloud patform of choice and opening it up to the 1 million (and counting) Ruby developers is a shrewd move. So with database.com, VMForce, Force.com and now Heroku, salesforce.com have consolidated their position in the market significantly.