The problem is with something like twitter, you don't know how valuable it's going to be for you until start using it for a length of time. I'd probably be hesi

The problem is with something like twitter, you don't know how valuable it's going to be for you until start using it for a length of time. I'd probably be hesitant to pay even $5 for it if I though I might only tweet once or twice. Of course I'd be willing to pay more if it became a valuable social or business tool but I have no way of knowing.