Vadim Lavrusik is a new media student at the Columbia University Graduate School of Journalism. He is @lavrusik on Twitter and blogs at Lavrusik.com.

In the current economy, job security has become somewhat of an oxymoron. Which is one reason why maintaining connections with your old university classmates, especially when you find yourself looking for a new job, can be crucial. Now universities across the country are beginning to use social media tools to engage alumni and build a network of graduates with a shared affinity for the institution.

Of course, helping former students stay connected is just one reason universities are turning to social media; fundraising is another, and there are many more. Below is a look at 10 ways higher education is harnessing the power of social media to engage alumni. Let us know of any other ways you have used social media to connect with graduates or your former classmates in the comments below.

Though a lot of schools offer their own database of jobs online, many universities are finding LinkedIn to