Twitter has quietly began testing a self-serve option for its ad platform that will allow you to buy ads directly from the website with only a credit card.

In order to advertise on Twitter you have to go through the long process of setting a budget, selecting run dates and target locations, and submitting an application that is added to a queue of people that want to advertise on the service.

The new self-serve ad platform will allow advertisers to purchase ads directly from Twitter’s website and will only require a credit card. Right now you can only purchase Promoted Accounts and Promoted Tweets, but that will expand as the service is rolled out.

“This is an important step in continuing to grow Twitter’s business,” explained Twitter rep Matt Graves in an email. “Our Promoted Products can help small and medium-sized businesses build their audience on Twitter and better engage with the people they want to reach.”

The program, which was initially announced in April 2010, is currently being tested among a small audience. In the coming weeks and months Twitter will begin to slowly roll out the capability to more advertisers.

This certainly is an important step for Twitter as this is something Facebook and Google have offered for quite some time.

[Via: All Things D, Image credit: Paul Joseph]