[onion2k]

Entirely selfishly - absolutely nothing.

I'm quite happy to find a phone number and call the company directly if I want to know something. In my experience that gives me a huge advantage over 99% of candidates who are only willing to read adverts passively.

[V-2]

Having to do this for every single ad you might be interested in certainly is some way of proving patience, persistence or phone handling skills, but I'm pretty sure I wouldn't want to work at a company where that's what is seen as a huge advantage over other candidates...