It's merely a trick. The person who types in the answers at peteranswers.com is the person who is typing in the answers as well. Trust me, it's easy to do. I've scared my friends with it before. It is not a demon, or a "soul searcher". The answer lies within the typer and beholder.
What the person who is typing does is writes in P. and the period will show up as an "e". Then type in the answer, but the letters will come out as "Peter, please answer the following question:" When you are done answering the question, hold down the period until the whole thing is typed out. Then type in the question. So it'll look like this:
Peter, please answer the following question:
What is my name?
Tiffany
but......the typer actually types in this:
P.tiffany.........................
What is my name?
tiffany
I was freaked out the first tiem too, but I can do the trick myself now.