multiple sites, same keywords ?

What if I have 2 different sites that sell a similar product and want to use the same keywords in my adwords campaigns?

Can I just use 2 different adwords accounts?

I put up one site and advertised on adwords and it is doing well.

So then I put a second site and advertised this in another adwords account that I haven't used in while and used most of the same keywords since they worked well in the first site.

It seems the second site I created in the separate account was hardly even getting any impressions at all. Maybe it was just because of a poor account history and perhaps I should just try with a new account?

You can create a second site that is exactly the same and just iFrame it

It also might be best to you a Javascript iframe to encrypt your source code There are JS small apps on here somewhere that will do it for you.

With this method you can use all the same keywords and same website

Please, tell me more about this, Google knows if I use the same website but with diferent domain name on another adwords account? I've do this before, but now seem that my new accounts are being frozen...