Any clue whether they are checking the destination URLs for malware? Using perhaps Google's Safe Browsing API ( http://code.google.com/apis/safebrowsing/ http:/

Any clue whether they are checking the destination URLs for malware? Using perhaps Google's Safe Browsing API ( http://code.google.com/apis/safebrowsing/ http://code.google.com/apis/safebrowsing/ )?