LinkedIn (www.linkedin.com) is the largest and best-known social network for professionals. Many of you are probably already familiar with it.

1. Do you have a profile? If not, you might want to consider developing one because many companies recruit from LinkedIn, and it can be a great tool for professional networking.

2. If you already have a profile, think about how you might improve it. Do you participate in discussion groups? Have you reached out and connected to people in industries where you want to work?