When you buy stuff online, most retailers give you the option to check out as a guest or register with them. The latter can make it more convenient to check out next time, but here's the case for buying as a guest.
Photo by negativespace.co
Of course, there are benefits to registering and creating an online account with a site. Again, it's more convenient, and hey, maybe they will send you coupons down the road. However, CNET makes an important point against it:
Nearly every online retailer will ask you to create an account before checkout. If you can check out as a "guest," you should. Using a guest account will keep a lot of your personal data off the company's servers and safe in the event of a hack.
If you don't shop at a retailer often, it's probably worth staying on the safe side and just buying as a guest. For more tips on how to shop safely online, check out their full post at the link below.