Has blockchain.info wallet been around longer?
I'm assuming you're asking because you want to know if you can trust blockchain.info's web wallet service.
The beauty of it, as I understand it, is that
you don't need to trust them.
All they have is an encrypted backup of your wallet, your clear text private keys only live inside your browser.
Even if they disappear you can still get access to you coins via a third party piece of software or from the paper backups that you can make.
if you saved those numbers and password they give u?
The password you chose yourself, and yes you need to remember it.
Their Import/Export page lets you print out, or export clear text or encrypted backups of your wallet with all the information you need to access you coins from other clients if you wish to.
