[anigbrowl]

Thanks for giving a meaningful answer instead of 'because that's how we do it'.

[gwillen]

No problem. To be clear, I don't work for Google; I quit earlier this year. As for how that relates to my degree of helpfulness, take that any way you like. ;-)

[enneff]

FWIW I would have responded the same way (the cited page at google.com calls out cross-site scripting attacks specifically), but you beat me to it. :-)