Advertising on Twitter

I recently received an email with a credit to advertise on Twitter for the MyPivots twitter handle:

I'm thinking of trying out some advertising on Twitter but know nothing about it, yet.

Objective: Get more traders to participate in the sometimes daily trading discussion with BruceM et al in the Strategies and Setups part of the forum.

My Ask: Is there anyone reading this with knowledge of advertising on Twitter that has any ideas that would help achieve this objective? Feel free to send me a Private Message or reply to this topic.

I'd be happy to spend money advertising what I think is the best daily ES trading discussion on the web so let me know if you have other ideas that would work in getting more traders to participate in this discussion.