While the sessions were very good, much of the value gleaned from attending a conference like Interaction ‘09 comes from hallway discussions. I had the pleasure of meeting Calvin Chan, a Vancouver local. I did the favor of hooking him up with the leader of the Vancouver local IxDA group. While chatting, he saw my name tag and asked what DesignAday is. I happened to mention the lack of comments on Tumblr, and he recalled a service called Disqus. I just checked into it this evening, and sure enough, I was able to easily integrate it into my blog.
So, feel free to comment. I look forward to seeing what you have to say.