You will find that you have two different groupsof people in your LinkedIn networkthose that have sent you many contacts and those that have not sent you very many. Here are some suggestions from us at BroadVision Marketing.com.
You need to stay connected to the strong ones by sending them emails, texts or calls every two weeks or so. That way they will continue sending you referrals. You can also send them quality referrals, people who can help your contacts the most. Visit their websites and leave comments (all website owners and bloggers love comments). You could even send them something snail mail. Yes, I did say snail mail.