Chirpify, the startup that provides for buying and selling products via Tweets, announced a new type of hashtag that allows consumers to make purchases simply by clicking on it. Called an “action tag,” the company wants to turn hashtags like #buy or #donate into URLs that can be reprogrammed for the second screen audience to acquire products they see on TV. It works through both TV and digital ads with instructions like #buy #cocacola, which could be cross-posted to an individual’s Twitter. Chirpify would then process the order through Pay Pal. The startup is alrady working with big brands like Adidas and the Portland Trailblazers, so the idea is already implemented in the world, and is proving effective.