I did a whois search for Guruaid.com from WhoisXY.com and found owner details. It looks good only. And i visited the site ScamAdViser.com and it showed "Low Trust Rating. This Site May Not Be Safe to Use." so don't use the site. You can try using Google and find another good site, then start using that site. You can use this method for finding a whether a site is legitimate or a scam one.