How do you build your online brand?

The advent of all the many social media channels, have made brand building 'more interesting'. There are now many ways that you can look to build your brand online in a very cost effective way. Like SEO it takes a little time and persisitence to succeed. Chris Garrett a social media consultant has written this excellent post on how you maximise all the channels - but only the ones that are relevant to you.

  As you can see the focus of the brand building is the blog. You use all the other media to drive people back to 'your brand' - your blog.

So I say again, why haven't you got a blog yet??