Social media moves so fast, it's hard to keep up. Here are the week's top stories in scan-friendly format:

  • LinkedIn Adds Volunteer Experience
  • Links Shared On YouTube Persist Longest
  • More Than a Quarter of US Adults Use Mobile and Location Services
  • Instagram Gains 50 Millionth User

LinkedIn Adds Volunteer Experience

LinkedIn, the ever-popular social network for professionals, has added a new feature that will appeal to those with volunteer experience they'd like to show off as part of their CVs. Now in LinkedIn, those who are involved in volunteer or unpaid work can display this experience in the "Volunteer Experience and Causes" field in their LinkedIn profiles.

According to a recent survey by LinkedIn, charitable experience helps job hunters land jobs because employers say they consider volunteer work to be just as valuable as paid work. Also, of 2,000 professionals surveyed, 89% had volunteer experience but only 45% of those listed said experience on their resume. For some, volunteer experience is sought for personal reasons, not to publicly display on their resume.

For those who wish to list volunteer experience or affiliations, this new facility will be a welcome addition. What are your thoughts on the new feature in LinkedIn?  Will you list yours on LinkedIn?

Links Shared On YouTube Persist Longest is the most popular URL shortening service used on the web. In an era where sharing links online is commonplace for online on services such as Facebook, LinkedIn and Twitter, where is the best place to post a link in an effort to get eyeballs on that link? looked into the patterns of 1,000 popular links across Facbook, Twitter and YouTube to see "the amount of times at which a link will receive half of the clicks it will receive after it reached its peak."

As one can imagine, the type of link can help determine how long of a life it has. That is, breaking news will be clicked quickly and a less timely link such as a video will have a longer half-life. According to, links posted to Facebook have a 24 minute longer half-life than those posted on Twitter. Also, links posted to YouTube have the longest life, meaning links on that service are clicked long after they are posted.

So, in summary, Twitter is best for getting quick activity on links you share and YouTube is best at getting a more long life on links.

More Than a Quarter of US Adults Use Mobile and Location Services

Pew Internet Research took a look at the popularity of mobile location based services to see how frequently Americans use such utilities. The thinking goes that as more Americans adopt smartphones, then more LBS services should be used, driving the notion that mobiles are an attractive marketing avenue.

According to Pew, about 28% of all mobile-toting Americans utilize at least one location-based service that exist in the mobile and social media spaces. The most frequent use of location based services is mobile maps, utilized by those looking to get maps or directions based on the location. Only 5% of mobile users are checking-in to locations using services such as Gowalla or Foursquare. The social movement is alive and well on mobiles, with 55% of users reporting to use Faceook or Twitter on their phone.

Do you utilize a check-in service via your mobile? What about browsing Facebook, LinkedIn or Twitter while you're on the move? Sound off in the comments below!

Instagram Gains 50 Millionth User

Speaking of mobile and social networks, Instagram is experiencing continued growth. The photo service, which lets you take photos, apply filters and post photos to various social networks has been popular amongst iPhone owners for some time.

The site just acquired its 5 millionth user and also has more than 200 million photos uploaded to the service. Users of the service uploaded more than 50 million photos in August alone, according to Techcrunch. To put this in context, keep in mind that it took almost 2 years for Flickr to reach 100 million photos.

With the iPhone now in the hands of millions of users, it's apparent that Apple phone owners love to take photos and publish them online. According to Flickr, the iPhone 4 is the most popular 'camera' on the service based on EXIF data attached to photos.