For this thing, simply blog about anything technology related. Yes, it can be anything that relates to technology! You just need to share a few thoughts. For example:
I like digital cameras because it's much easier to share photos with family and friends and especially now that I have a Flickr account.
Services like Skype let me talk with friends through our computers.
Technology advancements for music, medical equipment, etc.
Video Games, iTunes, iPods, Flatscreen televisions, etc.
PS: Also be sure to add at least one comment to another participant's blog. That's what online communities are all about - connecting and communication. :)