Answered by Steve, Hiring Expert at Caterpillar Inc., on Friday, December 12, 2014
Not at all. In fact, I would encourage you to follow multiple companies. This will help to keep you abreast of what is happening at each of these companies (i.e. as they post updates to LinkedIn and other social media). Going forward, this will help you to get a feel of those companies that are doing things that are similar to your own passions.
Regarding how it make look to others, I personally think it is important to have a diverse set of companies that you are interested in and following. Company representatives generally do not read anything into the companies that you follow on LinkedIn, other than you have diverse interests. Also, as other companies recruit you, LinkedIn can provide tools to those companies to connect with those who follow them. Therefore, it can be a competitive advantage for you to follow multiple companies.