Yikes!

I've been doing some computer spring cleaning today and I'm a bit overwhelmed. I have six different email addresses (each with a different password of course) and countless accounts and user names for other sites. For right now, my memory works to keep all these groups and their log-ins separate, but I wonder what will happen as I get older? Will my own feeble mind be enough? Will I still need all these addresses? I mean honestly, why don't I just consolidate down to one or two? As for all the different sites I visit or shop, how can I expect to keep up with them? Do any of you keep a written record of user names and passwords? I generally just type a few of my standards in until one of them works, but as my head feels full of cobwebs today, I can't help but wonder if there is a better way.

Maybe I'll just rely on St. Isidore, patron saint of the Internet.