Since 2000 I have been a member of both Star Alliance and One World frequent flyer programs. And every summer I face the same problem when I'm about to book a holiday flight. -There's no way i can remember my user name thus not being sure if i remember my password right. Airliners have a fairly strict rules about how user names or passwords should be structured. And calling for help is usually a long way.
The same year as this contradictive union with airliners started, I was highy amazed that there was a person in my company who refused to use Windows machines because of the unreasonable need to change password every 40 days. -Because everybody writes it down underneath the keyboard on a Post-It (although he encrypted it for three times before writing it down, it was too risky for him). Later he changed the company, but his strong opinion has been in my mind since.
I have written about this earlier too, but this time I wanted to point out also that services should also consider using reasonable security measures to enable people to use good passwords and systems attached. Next time I'll log myself into this page, I will probably use password like 'password'.