particleman - 1:06 am on Nov 26, 2012 (gmt 0)
There are plenty of helpful info articles out there but in short. Godaddy's cheap SSL certs work fine at the base encryption. What you pay more for is the verification process. That tells customers you are in fact who you say you are. This is not well known therefore not that big of a deal to a customer as much as seeing the "lock" on the browser because that is what the media has taught them.
You buy certificates per domain name. If you host on a shared host you must have your own ip address also or you cannot use SSL.