A hoax. The text of one such email follows:

Here's a new one in name only: OUTBACK STEAKHOUSE
We have rented an email tracker for the next 3 months!
We at RH Power Inc. want to see how many people our
email can reach in this time!
If you forward this mail, you will be PAID MONEY!!!!
This email must be sent immediately upon receiving
this for it to be counted.For every person you send
this to you will receive $413!
For every person they send this to you will receive
$139! I too (Ryan LaGrange, Head Marketing Manager),
thought this was a hoax until I did the same this and
the next month got a check for $4612 in the mail!

*************************BONUS*******************************

IF YOU SEND THIS TO AT LEAST 15 PEOPLE RIGHT
AWAY, A $25 GIFT CERTIFICATE TO OUTBACK
STEAKHOUSE WILL POP UP ON YOUR SCREEN PRINT OUT
Gotta try it just for the $25 certificate

If it sounds to good to be true. It probably is. And in this case, it definitely is a hoax.

Remember, hoaxes cost companies - and people - time and money. Please do not forward them to others.