I have a hostgator account which offers me discount codes every so often!
OFFER 1
My newest offer gives $9.94 off any new hosting purchase by a new customer!
It is open to any 3 of the different hosting packages!
OFFER 2
is a more public code which gives you 20% off
All you have to do is sign up HERE
and use either of these codes:
Offer 1 - hgc25
Offer 2 - BEACH

If you want the free adsense voucher all you need to do is register, then on the left hand side there is a link showing Free $25 Voucher!