Last year, when I read that Google Wave was going to change my business, career and life, I must admit I was moderately excited. I totally didn’t get the ins-and-outs of it, but that’s very often the way. In fact I fully expected it to have very little impact on my life at first–systems that have something to do with users interacting often need to cross a certain adoption threshold before they have any real use or impact. For example, the appeal of Facebook only increases as its population rises, as you’re increasingly likely to find other users with whom you’d want to interact. Of course, therein lies a spectacular Catch-22. All such things must start small, but, if they’re no good until they’re big, how do you persuade people to join in?