There have been ad campaigns in the past. Should the new legislation go through, there will be a massive awareness program.
I could easily see TA and others be sued because they are aiding and abetting the illegal passengers by promoting the illegal drivers. TA's "vetting" as well as rankings leave much to be desired while some pages knowingly promote illegal drivers.
Interesting you should ask how many people use this site. As of this morning, Negril.com is in the top 800,000 of all websites worldwide (about 1 billion exist).
And we are in the top 180,000 most popular websites in the US.
So far this year we have had some quarter million unique visitors view over 3.5 million pages.