1. Too High Pay Per Click Rate- you might be on other PTC sites. But no one is paying 1$ per click. then how this website is claiming to pay this much money for a single click. they promise a lot that you will earn a lot of money by that website.
2. No Forum For Discussion- there is forum in each and every legit paying PTC sites but you won't see any forum bigmoneyptc site.So, no users of this website can interact with each others on site.
3.Big Money for Sign up- they claim that they will pay 10$ when you sign up which is too much. bigmoneyptc is showing payment proof in their sites. i would like to show them here.
You can see that they are claiming that they have paid this much money. but they are not showing their erased email id.
4. information about the account holder on who.is website about bigmoneyptc-
Domain Name: bigmoneyptc.com
Registrar: ENOM, INC.
Whois Server: whois.enom.com
Referral URL: http://www.enom.com
Expiration Date: 2010-05-02
Creation Date: 2009-05-02
Last Update Date: 2009-06-26
See bigmoneyptc.com DNS Records
Information Updated: Sun, 27 Dec 2009 13:58:45 UTC
5. on websites i could find these links where bigmoneyptc was reported as a scam.