I was referring to Thunderclap as recently as last month, then I found out on Monday that they have been rejecting some author campaigns. Susan Tarr, author of Miranda Bay, tried to run a campaign on March 28th. Upon filling the forms and completing the process, she received the standard message:

Hey Susan Tarr,

Thanks for submitting MIRANDA BAY. We will review it within 3 days (Mon-Fri, 10-6 EST) and contact you when it’s approved.

If you’d like it approved within 24 hours, you can upgrade to any of our plans.

You can see a preview campaign page until it’s ready.

Have a question in the meantime? Check out our knowledge base.

Thank you!

However, the very next day she received the following rejection message (emphasis is my own):

Unfortunately, due to a change of rules with Twitter, we are no longer able to approve campaigns that…