On its blog today, Twitter announced that it is testing a "Buy" button, which will allow easy purchases of products in tweets.

This is an early step in our building functionality into Twitter to make shopping from mobile devices convenient and easy, hopefully even fun. Users will get access to offers and merchandise they can’t get anywhere else and can act on them right in the Twitter apps for Android and iOS; sellers will gain a new way to turn the direct relationship they build with their followers into sales.

The company announced it has formed partnerships with four different platforms for the test: Fancy; Gumroad; Musictoday; and Stripe. It said that after a user taps the "Buy" button, the purchase process can be completed "in just a few taps." Users enter payment and shipping information, which the blog post said is processed securely, and can later be removed if the user doesn't want that information associated with their account.

The initial partnership consists of deals with Burberry, DonorsChoose and GLAAD, and also with a variety of big names in entertainment, including Brad Paisley, Demi Lovato, Eminem, Pharrell, Paramore, Ryan Adams, Soundgarden and others.