To think that justice is blind, so hacking is hacking. Why should it matter if it is for huge gain or just disruption. It is still hacking and the result is annoying.
Personally, I keep a address book (a real, old fashioned pen and paper version) with all my passwords and even use a simple code on them so that if you find it, they still will not work. All the important ones, have a list of passwords that I cycle through
Means it is easy to regularly change passwords and remember them.
Also better to leave this in a safe place, totally separate from the where the PC is.