linkedinBusinesses can use LinkedIn to check references on prospective partners, find outside experts, close sales, and to locate potential employees who aren’t even looking for a job. But before all of that, Luo tells the Business Technology Blog, you have to know how to set up your profile.

Luo says that the first rule of using LinkedIn is quality, not quantity. Only add people to your network that you have a real-life relationship with. Too many people ignore this, trying instead to build the biggest networks possible. But that’s a bad habit. “Your network is a reflection of you,” Luo tells this blog. People will see who you’re connected to and assume that you trust and can vouch for every single one. So resist the temptation to invite someone if you’ve only emailed with them a couple times. Similarly, don’t accept invites from people you don’t feel comfortable serving as a reference for; Luo says that you don’t have to worry about hurting someone’s feelings because people aren’t told if you reject their invitations.

Luo also recommends putting as much information about yourself as you’re comfortable with on the site — things like past jobs, where you went to school, and any special expertise you may have. This includes registering for a LinkedIn URL with your name. Not only will this help people find you, but it’s “one of the few ways that you can influence the information that a Google search on your name turns up,” says Luo.

Once your page is set up, you can begin to use LinkedIn to help your business. The simplest way is to find out whether or not you have common connections with someone you’re about to meet. You can find this out by simply by searching for their name.

LinkedIn is also a good way to solve problems that you don’t know how to answer. If you need help with a marketing problem, for example, but don’t have a relationship with anyone in your company’s marketing department, you can find out what friends or friends-of-friends have that expertise. It’s the equivalent of asking your friends if they know a good dentist, says Luo, only faster.

The site is also a good way to check references. No one ever volunteers the name of someone who isn’t well coached on what to say. With LinkedIn, you can use the advanced search field to find people who worked at the same place at the same time with your applicant. Then you can call them for an honest reference. LinkedIn found and called 23 references for Dan Nye, the CEO it hired in February, that way.