qrcode – Will the Bitcoin QR Code Generator be hacked by BTCFrog?

The following URL is self-explanatory. An attempt is made to generate a QR code requesting 0.005 BTC at the indicated address

http://www.btcfrog.com/qr/bitcoinPNG3.php?address=31oLAAQDmuRAGfkviHPDXFgV15To4idott&size=200&label=xx&message=yy&amount=.005

This generates the following QR code

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If this QR code is scanned with a purse of your choice, the recipient address will change to something else! The address is clearly owned by someone and has multiple transactions.

Is it hacked or am I doing something seriously wrong?