''The Google Blacklist Christmas Card'' (NSFW) site, is put together by London-based Nation, takes a list of less-than-common words and throws in some Flash to make an E-Card generator with a difference.
The list of words is drawn from hacker site 2600, which determined through a process of trial-and-error earlier this year which words Google considered inappropriate for its Instant Search users to stumble upon. Searching for any of the words using Google Instant Search delivers a blank screen - users must hit Enter to reveal the results of their unsavoury search.
Nation is no stranger to quirky ideas - in July, the firm created a unique way of helping people decide what to make for dinner. As with Google Blacklist Christmas Card, this site isn't one to open at your office workstation - the URL speaks for itself.
More Info: The Google Blacklist Christmas Card