There is no need to do this unless you were wanting to use multiple promotional vouchers withing the first 2 weeks of creating an account (which is not allowed by Google's rules). It is best just to have a Campaign for each website, if that is what you were wanting new accounts for.
I actually DO have multiple Adwords accounts and Google is fine with it. I posted here some time ago about this (just too lazy to find it). Basically, I created 2 accounts then wanted them merged so I sent Google a tells. The response back was ...don't worry about it (or in otherwords...I'm too lazy to merge your account since it's ok to have 2). Adsense is another matter tho
I spoke to someone from Google the other week and questioned why they only gave us 20 campaigns per account, which is too small. She babbled for a bit saying how 20 campaigns is more than enough for everybody - I sighed quietly and presumed she worked for Google but didn't know the system at all, so instead asked if I was ok just opening another account to carry on my next 20 campaigns. She told me what I knew - it was fine, but not to bid on the same keyword twice (once from each account to have 2 x listings).
I'm pretty sure you can't use another promo code if you open another account with the same CC. Maybe you can if it's a different code than the first one you used, but you can't use the same code on two accounts with the same CC.
Hi Thanx for all I open Two Adward acc with same Visa Card but I deativate my Old acc Now I use Second acc , where I redeem Adward Voucher , after Voucher exh- I will try to use agin first acc.