While looking at the Google Groups options for the new O2 Platform mailing list I found an 'Embedding your Group' which I decided to try on this blog.
And the result is quite in interesting.
You can see it in action here (or by clicking on the O2 Platform Mailing List link above) and it looks like this:
Hopefully this will help to O2 users to post more questions
Here is where I found the Embed code