Ask them how they select the submission sites for your site. Some services will re-send your info to thousands of directories or other contacts, bragging about the free link they got you. Give us one McKinley over 50 lists of unorganized, meaningless links any day. Also, just because a directory offers a free link to any business does not mean it will be in the best interests of your company to be in that directory. Image and positioning.
Quality beats quantity in the long run.
If all that someone does is stick your URL in all the major general directories they know of, they have insulted you and your site. Yes, they take some time to research. It's worth it. Most awareness services don't even try. Please make sure to bookmark this page so you can return to it after you have checked out other site promotion services.