ooh no !!!! theyve got you too !!!!!!
don't tell me youre a organize, realize, socialize person too !!!!!
oxford dictionaries now allow organise AND organize yeah,
but the older dictionaries, and as i was taught at school, its organise only......the z is a relatively recent Americanism corruption !!! some kids now use the z, largely due to MS Office i reckon. !!! the z is now official English !!!! yuk
edit
i'm reading The Times, and every word is organise, organisation, realise, conceptualise.......the s is definitely 'proper' English, the z is also allowed though...
type organise into search at http://www.bbc.co.uk/
now type organize
i rest my case : 3,330 to 256 !!
ps how old are you ??? if over 30 and you still use z, then i'm gonna shoot you !!!