Ofcourse all the checks you speak of can be implimented but this is just bare-bone.

Hey, look - I've got a

Cool use for acetylene and oxygen: Make coffee. Mix acetylene and oxygen, ignite the mixture and direct the resulting flame at your coffee pot.

Disclaimer - that's just a bare-bone recipe.

I have seen welders making coffee with their gear, and they did it without melting their coffee pot or blowing themselves up. Guess why?

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}

Bare bones means it doesn't do much. It a statement about functionality, not quality. Your code doesn't even provide the bones. It's useless on any site that uses relative links, frames, links to other sites with sites with lots of link, or links containing &. I'd be hard-pressed to find a site on which it works. That's not mentioning the major security bug.