Posterous Subdomain
First things first. If you are going to use an external platform for your blogging, you'd like to consider at least owning the domain. If one day you want to leave the service, this is the only way to keep the old links and benefit from bookmarks and blogrolls for the next incarnation of your work. Is nice that posterous lets you do just that.
Now, some people happily dedicate a whole domain to their posterous accounts (or other services with the same feature). Chris Garrett for instance uses www.chrisg.co.uk for his posterous, but he has www.chrisg.org and www.chrisg.com for differnet purposes. Personally, I'm more keen to see my posterous as a facet of my online personality and make it a subdomain of a guioconnor.com. You may want to do this for many reasons, one of them being that you don't need to pay for yet another domain. How you do that? Easy! A sub domain is a domain in its own right, so all you have to do is to go to your registar, create the sub domain as an "A Record" and point it to posterous DNS server IP: 67.207.139.81 In Dreamhost, you can go to https://panel.dreamhost.com/index.cgi?tree=domain.manage& click on DNS for your domain and add the record as exemplified by the picture. You can do something similar of other services on the web that allow you to customise your domain. An easy way to keep control of your work on external platforms without having to register a domain for each one.
