I'd use caution whenever buying or giving away your information to a website that isn't a well known source. Sites like Amazon, eBay, BestBuy, etc. are well known legit companies. However, many of these random .biz websites can be scams and most often don't practice good security habits. Do some research, figure out if that site has any reviews or reports about its quality of service.
When in doubt, avoid these sites and use a trusted source.