writing a google tag cloud script

[asmith]

 

hey guys

 

I want to write a tag cloud script. I don't know how to deal with the words that I get from http_referrer.

 

If I save the keywords getting from the http_referrer in the first place (where no word is saved yet), then for other times I check if the word is already saved and make it bigger ...

 

but how to filter these words ?

for example if an inappropriate word comes, how to find it and filter it?

if someone find my "big widgets" page by " big widgets frog" , then it will save frog in my page.

 

What's the exact pattern or idea for making tag clouds?

all these words are coming from http_referrer in the first place or i got it all wrong? :/

 

examples :

under the thread

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