Is hits link a valid counter? Safe, ect?

Answer 1

what do you mean by hits link?

how many times someone clicks a link? I'm gonna go with this, and the answer is not really. This would be equivalent to a very simple counter that only counts how many times a page is displayed. More sophisticated ones, track the IP address of the people looking and only count unique IP's.. this is referred to as unique visitor counting, and is the best of the counters (unless you just want a really inflated number)