When it started, the name “Chirpify” suited the Twitter world perfectly. But things are going well for the Portland-based startup, and Chirpify announced today that it is expanding to Facebook’s extremely popular photo sharing-app, Instagram.

Chirpify, the only platform for in-stream commerce that was previously only on Twitter, is now available for Instagram users who wish to buy and sell funds within the social media app.

By Tweeting – and now Instagramming – the word “buy,” users can buy products via social media.

“Today Chirpify took another step to decentralize commerce and payments across all streams from any device, whether a mobile phone or desktop computer,” Chirpify CEO Chris Teso said in a press release. “If people can’t buy it in-stream it’s not social commerce. It’s advertising. We turn attention re-routing advertising into high value in-stream transactions. We’re the only company truly doing social commerce.”

Chirpify makes the purchasing process from everything to shoes to music seamless on social media. Here’s how it works: On Instagram, sellers and/or fundraisers can post a photo and set the initial comment to “#InstaSale $amount,” or “#InstaFund $amount,” with the price replacing “$amount.”

Chirpify will automatically create a listing that people can transact with. Then, after linking to their PayPal accounts, prospective buyers should comment back the word “buy,” or “donate.” Chirpify then sends a secure download and receipt via email.

The video above illustrates this pretty well and likely better than words.

There are a flurry of launch partners, from the creators of KONY 2012 Invisible Children to actress and singer Kat Graham to hip-hop artists like Meek Mill and Wale. All will launch Chirpify social commerce campaigns soon.

The company also introduced Chirpify Social Storefront, a feature that allows people, companies, politicians and non-profits to sell items or raise money from the Web. Earlier this year, Chirpify introduced campaign donations via Twitter.

Chirpify landed $1.3 million in its first round of funding last April from a group of angel investors that includes BuddyTV CEO Andy Liu; Geoff Entress; former Facebook executive Rudy Gadre; HootSuite CEO Ryan Holmes; Voyager Capital and others.

Now that the Chirpify is moving beyond Twitter, maybe another name-change is in the works. The Oregonian’s Mike Rogoway previously covered Chirpify’s transformation, noting how the company changed its name from Sell Simply and how the service was used to power the popular Tweet-a-Beer app at SXSW earlier this year.

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