I am in the process of setting up my new Ego Sole Trader site on Squarespace's platform. At the moment it is located at http://EgoSoleTrader.squarespace.com, but it will be moved to my own domain, http://www.EgoSoleTrader.com as soon as the transfer to Nettica is completed. I found out about this service when I listened to net@night with Amber MacArthur and Leo Laporte. Squarespace is a sponsor of net@night. Read Anthony Casalena's post, Squarespace Social Widgets Release.
I will use the WordPress template, Headway for some other site in the near future.