uestbooks were where you said you had been. This one answers. It is a small toy in the manner of ELIZA, the pattern-matching program Joseph Weizenbaum described in 1966 (Communications of the ACM, 9(1), 36–45; doi:10.1145/365153.365168). It finds a keyword, turns your sentence around, and hands it back. There is more about ELIZA on the minds page.

Nothing you write is kept or sent. Close the page and the book is blank again. That also means nobody else will ever read it.