Thank you, really appreciate your opinion
I agree that adding old clients also here will be great marketing move, but the problem is that not all clients will agree to be mentioned and usually we have agreements that we wont share any info about our cooperation. No wonder considering the services we offer, some guerrilla marketing strategies are still seen as black hat once.
Also consider adding customer reviews as excerpts on your Ann. Most people might bee seeing your ads for the first time and may not have the patience to ask certain questions but seeing reviews will further strengthen their convictions on you as their preferred option.