Customer Experience, Social Media Briefs: The Value of Pinterest, About.me's Collections, LinkedIn IntrosOne day you're worth $27 million, the next more than $3 billion. It's just another day, er, week in social media ...

Twitter isn't the only company discovering its value. This week, Pinterest confirmed that it had raised $225 million in a new round of financing that values the company at $3.8 billion. While that's a lot, what is most impressive is that its value grew so rapidly.

Who Knew What DIY Crafts Were Worth?

Two years ago, Pinterest raised $27 million at a $200 million valuation. In comparison, Twitter took three years to grow from a valuation of $200,000 in July 2007 to $3.6 billion in December 2010. As Pinterest experiments with advertising, perhaps it's only a matter of time before Pinterest goes public. 

Speaking of Pinterest's value, About.me is striving to be more Pin-like. Since it bought itself back from AOL in February, About.me has been working to set its platform apart and launched something called Collections for all profiles. Users can find About.me Collections in the drop-down menu on their home page. From there, they can click on the link to see two pre-populated Collections  — Twitter Friends and Facebook Friends. 

Additionally, users can create their own collections, which can organize people into groups. The goal, according to the site's official blog is "allow [users] to save and remember the people you come across on about.me. It’s like Pinterest for people." 

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Get Introduced On the Go

LinkedIn unveiled a new mobile app designed to boost productivity of mobile professionals and appeal to those who operate on the go. LinkedIn Intro, a plug-in for the iPhone's native email app that attaches people's LinkedIn profile information to their emails. Basically, it attaches the LinkedIn profile of anyone who contacts you right into the Mail app. It works with services like Gmail, Google Apps, AOL mail, Yahoo mail and iCloud.

Using technology from Rapportive, which it acquired last year, LinkedIn lets users immediately learn more about prospective contacts. The idea is that Intro gives users what they need to "put faces to names, establish rapport, write the most effective emails — and ultimately — be brilliant with people and better at what you do." What do you think of it?