On: How not to do URL redirects (… the way Quora does)

[ck2]

We let you create surveys and display those on your website in a “targeted” manner

A better title for your article would have been:

why to never rely on referers

(which can be blocked or purposely malformed)

[avlesh-singh → ck2]

Absolutely! The post might have got some attention from Quora in that case :)