I've got various bits of what I do around the web. My photos are on Flickr and vs. the Electric Cyclops., bookmarks and references on Zotero and Delicious, videos on Blip TV and on each site I'm on I look different. So if you watch me on Vimeo it looks like Vimeo's site rather than mine. It's easy to lose track on all these sites what bits I've done and what everyone else has done. Even basic theming, like being able to tweak the colour scheme would help break this up. Themes aren't just about looking pretty, they add to your online identity. In Posterous's case, they've gone a lot further with theming possibilities than they needed to. They could have had some basic colour options with an uploadable banner. Making the design as customisable as they have shows they're taking their users very seriously.

 The shared visual identity between alunsalt.com and alun.posterous.com means that I can integrate what I do between the two with less confusion for visitors. In my case many of my target visitors are people who aren't that comfortable with Web 1.0 let alone 2.0. While the address bar might say they've gone to a different site, the colour scheme lets them know it's still me. Now I can leave audio and short video files on Posterous, where this system excels, and leave the longer blog posts on the main site where Disqus can manage the comments, where I can hook in tools from other sites like Google and where I can categorise them more neatly.

 One of the things I like about Posterous is that it's designed around integrating with everywhere else rather than grabbing all the content it can off you. I think the common factor in the design choices is that they've really committed to making the product flexible. Making the the theming tools flexible too is a great compliment to that.