Which is the correct form?
Do you feel like 'snapping' at the different forms of these words?
Is it Web site, Website or website?
The truth is that nobody knows. Even Strategis.com (Canadian government site) uses both 'website' and 'Web site.' Similar decisions are needed for the words 'on-line' or 'online' and 'Internet' or 'internet' and other 'new' words for which nobody has the 'right' answer.
The conclusion at this time is to use whatever term you are comfortable with but the secret is to be consistent in all your publicity, both printed brochures and on your website (web site!)