If con-men give you money to find their next mark, you are complicit in their crime. Due to ad targeting, this applies to Google et al more than it would apply to dumb advertisement platforms like print.
It certainly would still be extremely unlikely that a victim would be successful in suing Google for damages of a trap they stepped into due to Google-supplied ads (just imagine what that would mean for kickstarter...), but chances of getting caught are not the line between right and wrong.
It certainly would still be extremely unlikely that a victim would be successful in suing Google for damages of a trap they stepped into due to Google-supplied ads (just imagine what that would mean for kickstarter...), but chances of getting caught are not the line between right and wrong.