Trying to look at someone's facebook page led me to re-finding my own page and giving it a new password and then trying to use it and then thereby finding my old blog last updated in 2013!
We'll soon see whether my computer remembers a password I've longsince forgotten though of course it IS written down somewhere in my folder of passwords.
There's gotta be a better way but those password aggregator sites could be vulnerable to hacking; I've heard stories of hundreds of thousands of people having their privacy broken.
Brave New World, eh.