The program is open to American Express cardholders and merchants, and Twitter will include a $100 credit to help the first 10,000 eligible participants get started. The signup form is available at ads.twitter.com/amex.
Small businesses that sign up will be able to use Twitter’s regular ad programs, such the cost-per-engagement Promoted Tweets product and/or the cost-per-follower Promoted Accounts product. Both of those offer geo-level targeting, which should make the opportunity more attractive to locally-based small businesses.
Although Twitter is taking signups now, the launch isn’t expected to happen until late March.
Twitter first offered a self-serve ad platform to a small group of advertisers back in December. Ad Age says that Twitter currently has about 3,000 advertisers overall (i.e., not just in the self-serve program).