Today I saw an ad for a product using mechant's site URL but with a space to make it different. Merchants URL is bestproduct.com - this advertiser is using best product.com as his display URL. I haven't tried this in adwords but it surprised me. Am I missing something here? May be a hole in adwords
I've seen the same thing. It surprises me this isn't detected automatically. Sooner or later, the ad will probably be hand checked and disapproved.