When I really concentrate on someone, I have noticed that they will either call or I will see them shortly after. I believe that "psychics" are kind of thrown out of context. I believe that a "psychic" is someone that understands body language and someone that can pick up on vibes easier than others. There are psychics that can read into the future or whatever it may be, they have mastered the art. I think anyone can do it, you just have to open the mind and be willing to learn many different things. I may be wrong with all of the above, just my 2 cents.

Yes this happens to me all the time....if i start to think about somebody they usually call or I find out that they have been trying to reach me.

i normally know when ppl i know are calling me like i have my inner caller id. so for ex. if a friend is calling, the phone rings and i know exactly it's her or him.
sometimes i also have dreams and premonitions, i can smell perfumes related to a certan person, i seem to perceive energies - don't exactly know how to explain this, but i am very empathic and when somebody is happy or sad, or going through something i am not aware of, i feel it at a deep energy level, which is almost physical, hope it makes sense.

pisces are not the only ones who are so sensitive though, cancerians are pretty sensitive too although i would say we pisces have more far-sighted previews so to speak while cancerians are more short-sighthed - time speaking.