3. Some bonuses. This feature depends from marketing tricks that you will use to attract customers. It may be $10 - $20 that the customer may use to bid on keywords at every new opened account. Such feature will cost you nothing, but may be important for the potential customer, especially if you started new PPC search engine. It may be some kind of referral system where your customers can gain credits to their accounts by referring others to your PPC search engine.

What is most important for the Pay-Per-Click search engine customers? It is traffic. People advertise through PPC search engines to get more traffic at their web sites. Therefore, it will be very hard to attract new members for your PPC search engine, if you cannot propose considerable number of new visitors for their web sites. So, if you want to start new Pay-Per-Click search engine, then you should be ready to spend some considerable amount of money on advertising and promotion. In opposite case you will not be able to propose traffic to members of your PPC search engine.

As you can see, attracting idea may be quite troublesome at a closer view. Customers will not spend time and money to advertise through Pay-Per-Click search engine, which does not give traffic. They will better use something like Google AdWords or Overture. I think that idea of custom made Pay-Per-Click search engine is dead except the cases when you add PPC functionality to the existing web site with good traffic or when you can propose some new fresh idea that will attract advertisers.  Michael Kashirin