This is interesting can you identify one just by looking at their web address?
Yes, avoid webhosting which are FREE such as geocities, yahoo, etc...One reason scammers had their website hosted with FREE webhosting are for their convenience, and also need not revealed their info. WHOIS directory does not capture any of their information. Unlike a registered domain with webhosting, its required that these info be feeded.
Here's one SCAMMERS http://www.geocities.com/realdiplomaprinters2/order.htm
Would you buy from someone who couldnt even afford to have a webhosting besides using the FREEBIES?
STAY AWAY RED ALERT SCAMMERS!!!!!