Passing JSON data to the server (?)

[eluser]taewoo[/eluser]
ok.. well, there is this JSON.toJSONString() at http://www.json.org/JSON.js. Except now I come across the issue of permitted URI characters...

The reason is because I am doing a widget that dynamically takes in javascript parameters (like Ad-Sense) and it is forwarded to my server via GET on iframe. There are values that might be multiple... since my controller expects certain # of arguments, i figured it'd be best to pass JSON object as GET parameter but apparently, that is not the smartest thing to do.

Is there another way that you recommend that I do this?