Here’s a LinkedIn tip. If you copy a people search URL from a premium member and use it for a basic member, it will work just fine. Of course, you will need to decide whether you are up for using it or not.
Let me illustrate it. Compare the two sides of the screenshot below . They were both created using the URL http://bit.ly/dB7cqY (paste it in your browser).
On the left side you see a piece of a premium holder search screen with some choices picked; on right side you see a screen shot ot a basic user account with the exactly same premium (though visually disabled) options selected.
(Someone could probably create a table of substrings that need to be used in the URLs per each premium field, per each of its options. It looks pretty strightforward; you need to add something like