[Falcon9]

There's a whole marketplace of influence out there, if you only start asking the right people. Want a cute but not overly bright reality TV star to tweet about your handbag company? There's a price for that. Looking instead for a popular recording artist to mention your viral video? Pricier, but very doable. Of course, Twitter doesn't get a share of this money.

[dexterdog]

Which is why they should charge for usage above X followers. You can't send unlimited emails to a 1mil person email list for free so why should you be able to do your marketing for free on twitter?