Hey Trent,

I might be looked down upon by search engines, but I am yet to hear that someone was banned by Google as a result of such practice. Sure, if there is excess usage of invisible text, then perhaps they'll just drastically downgrade your site in the rankings. But for a line or two, I am not sure what the penalty is like.

What I'd look for is how effective this method is at all. It would seem that most search engines have long learned about this technique used by thousands of website owners and adjusted their search algorithms accordingly not to take invisible text into account when ranking sites.