I wish bitcoin could enable micro-payments like this. I would love to donate small (or large) amounts of money to websites that I found a useful answer on. Unfortunately, for this to be possible every website has to enable or provide a way for me to pay them (be it bitcoin or something else) and all of the end users also must have this same payment system set up, which will just never happen. I just wish there were a better way for content creators to make money than ads. A ubiquitous bitcoin type solution would definitely be a step in the right direction.