One of the last bastions of ad-free Internet space is about to disappear. Twitter has confirmed that starting today, they are rolling out an official ad program they call “Promoted Tweets.”

According to Twitter, only about 2-10% of users will begin to see these sponsored tweets at the top of certain Twitter search results pages.

“Users will start to see tweets promoted by our partner advertisers called out at the top of some Twitter.com search results pages,” one Twitter biggie explained.

Among the companies to jump on the promoted tweet bandwagon: Best Buy, Starbucks and Virgin America.

Does this impact how you think of Twitter?

Twitter set to make money through advertisements [Reuters]

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