How most Flash games insert highscores and why it's not smart

How you post the data is a small portion of protecting a score - kids also use Cheat Engine to modify values in-memory which will be submitted properly. There's a community where they share instructions on how to modify games as well as a handful of sites where modified versions get published.

MochiDigits are really worth checking out for protecting in-memory values:

http://code.google.com/p/cunitescore/source/browse/trunk/as3...

For the submission process ... Flash is a very weak and open product, aside from browser debuggers and whatnot you can just decompile most games and see first hand what the source is. I lean towards obfuscating it just enough to not be "change this parameter in the URL", if you need more security than that you really need a user system + consequences for cheating ala Kongregate.

  The "Hoff" says "NO"!

Was there supposed to be something other than an image macro at the end of the link?