I'm gonna be that guy and ask: What is a Block Explorer and how is it different from an Internet Explorer?
Internet explorer is a tool to explore internet. Block Explorer is a web based service to explore the blocks generated by the bitcoin network. On another sense it allows you to look at a set of bitcoin transactions (block) to know who got how much from whom and when.
OK, I see. So it's not something for your average bitcoin user I take it. By which I mean, if I were to ignore it, I won't be missing out on anything important. Is that right?
All users of Bitcoin can use the Block Explorer to check their addresses and transaction ID's.
Paperwallet scans and a generator are also functions of coinsecure.info, so each feature rides on a different need.