When you guys register on different web 2.0 properties, do you use your main keyword in the url too? For example, If my main keyword is: "weight loss" would you use the same keyword in the web 2.0 sub domains ? i.e.: weightloss.weebly.com weightloss.livejournal.com etc ... Or do you guys suggest using some random names? Or closely related keywords to the main keyword?