Is adwords coupons selling legal ? Then from where this people get this ? I heard that this coupons are given to some famous companies whom are the great adwords advertisers ?
No they give adwords coupons all the time! this is how i started using adwords. If you participate in any Google University seminars you get some! I recently got £30!
I sent google an email on this, but never herd back. I did use a voucher when I opened my account and have had not a problem.
Everytime I sign up a hosting plan I get 50 dollars... They are just laying around though, cause you can only use it once per account, and you can only have one account Unless they are different companies, but then you also need separate credit cards etc.