Video has become a big part of the business strategy for social networks, including Facebook and Twitter. Now, LinkedIn is following a similar path by letting certain people share original videos on its platform. The new tool will only be available to over 500 "influencers" on LinkedIn, someone like the CEO or co-founder of a company. By letting you see these 30-second videos on your feed, LinkedIn says it hopes users can engage on a conversation about topics they're interested in, such as getting advice on how to get hired for a job.