On a lot of sites, especially those with a set navigation layout (where a new link/button is more obvious) and regular user-base, users will often click on a ne

On a lot of sites, especially those with a set navigation layout (where a new link/button is more obvious) and regular user-base, users will often click on a new link/button just to see what it is and not always because they want it. I cannot help but think this is only useful on (high-volume) sites where individual users are of low value i.e. do not pay to use service or contribute much, and for anything more sophisticated or with savvy users it would be deterimental (imagine seeing this on the stock-market web-app you pay $$$ for). It all depends on how often you use this trick really.