Read here>>http://computersavvy.wordpress.com/2009/12/10/scam-watch-justanswer-com-is-it-a-scam-or-is-it-just-a-really-bad-investment/
http://www.topix.com/forum/city/bangor-me/TM3DQKOV2SDPF32K9
http://www.sitejabber.com/reviews/www.justanswer.com
In my opinion yes it is a scam.Don't get into it.It will cost you money & the answer will probably not be what you were looking for.
This is a Simple Dialog Demo.