Presearch just recently opened up registration for all to sign-up with them.
Basically, everyone time you do a search on one of the platforms they partner up with (Google, Amazon, Tumblr, Wikipedia, just to name a few ...) ... you'll get 0.25 PRE token per search.
That's it. It's as simple as that.
Sign up. Do a search. And get 0.25 PRE token per search.
Currently as of Monday, April 9, 2018 ... each PRE token is worth around $0.22 USD ... not much at moment, but we'll see what the worth and value of this project will be in years time.
The one negative I see so far is how Presearch will make sure that people aren't simply making wasted searches in the quest to "only" get PRE tokens. For now, they do so by capping 8 PRE tokens per day of searches.