Very impressive ! Did you do the design as well ?
Nope, not this one, sorry.
My task was converting the design to xhtml/css and implementing it in Silverstripe.
Didn't add in all the content myself either, so you might find some faults/oddities in there :)
I noticed the blogs (Hints & Tips, Thinking Aloud) have categories in addition to tags. SilverStripe blogs don't have categories that I've seen, just tags, so how did you add categories?
In short: I created a 'BlogCategory' dataobject. Then on the blogholder I have a tablefield which let them set categories, and on the specific blogpages I have an optionset or checkboxset field, which let them choose categories.