See, now there is where my password is amazing. Its not a word.
I had an account on a site back in jr high that when I signed up, gave me a default password consisting of a seemingly random assortment of letters. Instead of setting it to something that wasn't retarded to the nth degree, I spent the next 4 years memorizing the sequence. Now, even if i ramble it off aloud to someone I usually loose them after the 3rd or 4th character.
XD
Oh yeah, I remember those passwords... I really hated typing them in when they gave them to me so I could change my old password when I forgot them...
But you do have a point that your password is stronger than a lot of people's, but (not to make you feel bad or anything, just using that type of passphrase as an example to post a fact for other users to read while they swim through this topic) are not entirely safe. A password consisting of all random numbers or letters are definitely safe from people outside of the internet, however, which is nice. This is because an exploiter can easily use programs that... well, I'm not good at explaining, but here's a slightly visual representation:
Say the password limit is 6 characters, that gives the exploiter/hacker person a base to start with. Now, an unfortunate user is using a password that consists of all numbers during this time and is the unintentional target of this event.
So the process begins: (it can also begin at 0)
"111111" ... failed attempt
"111112" ... failed attempt
"111113" ... failed attempt
and so forth until the passphrase is found. Don't get me wrong, this is faster than it seems since they're just making the computer count: what they were made to do in the first place. This also works for letters as well, but takes much longer because they have to cycle through 26 different symbols (obviously much longer than the numeric 9 [or 10 with 0]) or more if something is capitalized, effectively increasing the count to 52 different symbols per space.
Programs such as these are most often used in sites that allow an unlimited number of passphrase checks upon logon without a sort of time limit. Websites that enforce a passphrase check limit before incurring logon downtime make the use of said programs slow, and are highly unfavourable compared to other, less secure, sites.
Of course this is still MUCH safer than dictionary passwords people often use. These consist of common words or combinations of words or a word backwards... and requires only a simple tool that contains a dictionary's worth of words in it to check for passwords forwards, backwards, and in combinations. Slight, common alterations to the words (such as capitalizing the beginning letter) can also be easily checked if Mr. Exploiter sees that as a possibility.
Of course, this means no password is permanently safe, which is probably the whole point of this discussion, and dictionary passwords are probably the least safe (even in other languages). I personally recommend adding numbers or letters or corrupting the base word of the passphrase, but try not to make it too obvious (e.g. your birthyear after your password, a single number/letter afterwards, etc.). This will make your password saf-ER for a longer period of time (so you don't have to change it every 5 days. ... Ew.).
Really, like the administrators and good people said, the best way to prevent this from happening is to change your password now and then, which, admittedly, I don't even do (on purpose, anyway. Although my password changes sometimes, especially when I forget my last password...).
#####
Sorry for the long post, but I really wanted to throw this info out. Not to insult anyone, but to inform the uninformed (they're not stupid, they just don't know!) of what they can do to improve their passwords. See? Isn't information nice when no one beats on other people by calling them dumb? This isn't the subject to be doing that: passphrases are a serious matter and the un/misinformed public needs to be dealt with immediately in order to keep our glorious community safe from harm.
GLORIOUS.
Also, please, do not complain about the administrators "banning" people for using the same password. They're not actually being banned, but are being given a sturdier warning than a message telling them that their passphrase is unsafe, of which then they can still regain access to their account. Especially don't denounce the admins if you don't have any other particular problems with it than "liberties" and/or that you are already safe or allegedly safe, just for the sake of attacking other people. There is no need to bemoan the administration for doing that they believe is best in this large community, and personally they're doing much better than some of the admins I've seen dealing with the exact same problem.
Last paragraph in short: Please do not argue for the sake of arguing, this is not the time to do so. Instead, be more constructive to the uninformed and show them what to do, instead of grieving upon something they are unwittingly doing. Thank you!