Say what you want about it, but to class it as a mistake is wrong in my opinion. Back when Twitter was getting a lot of bad press from developers, the founder s

Say what you want about it, but to class it as a mistake is wrong in my opinion. Back when Twitter was getting a lot of bad press from developers, the founder saw a market niche and successfully got backing from lots of people in that niche ... Enough devs were willing to stump up $50 to get something like the Twitter API without limits (or the client side ads).