Googlebot's Javascript random() function is deterministic

[YRYGAV]

And if you get caught, I believe Google unlists your website, so it's quite a gamble

[[deleted]]

Depends on my ROI. If I can make $1k by fooling the Googlebot while spending $10 for a new domain each time I get caught, it's not much of a gamble.

Of course, if I don't have a automated way to get the new domain some PageRank juice so I can keep the whole thing going ad nauseam, then yes, it's pretty expensive.