I just found an amazing video by Otis Collier that gives a very useful tip about using LinkedIn to help recruiters contact you. Maybe many people already know this, I didnt and I think there may be many more out there like me.

LinkedIn, by default, places your contact details way down below your other details, almost at the end of the page of your profile. It would be much more helpful if you placed it at the top? Yes.
Otis shows you how to do it: