Wa Iyaki sis. I had to try it out myself before understanding it
and take a look at this- it explains it better than I ever could...
"5. Type a period "." in the "Insert Petition" box. You'll notice that the letter "P" will appear instead of a period.
6. Type in the answer to the question. As you type each letter or number of the answer, the screen will display one more letter of the phrase, "Peter, please answer the following question:" This means no one will know that you're typing the answer to the question, because it looks like you're typing, "Peter, please answer the following question:".
7. Type another period "." when you're done entering the answer. When you type another period, the next letter of the petition phrase ("Peter, please answer the following question:") will appear.
8. Complete the petition phrase. Once you've typed the second period, the actual letters you type will show up on the screen. Now, just finish the phrase, being sure to end it with the colon.
9. Type in the question. Just as above, the cursor will jump to the question box as soon as you enter the colon. Type the question that was asked, and end it with a question mark. Peter will think for a second and then display the answer that you typed."
http://answers.yahoo.com/question/index?qid=20070819210712AAgH3NY