Free vs. paid: Would Twitter be better if you paid for it?

There’s been an interesting debate going on over the past week or so that gets to the heart of one of the deep-seated conflicts within the web startup community — namely, whether apps and services are better when they are free or when users pay for them. Dalton Caldwell, founder of Imeem, kicked things off by saying he is going to try and create a for-pay version of Twitter, and others cheered...