Pagerank drop

One of my sites was recently given a facelift. Afterward, the Pagerank was 4. Then, the client decided to try Reach Local, a PPC company that pulls content dynamically into a subdirectory on their server and changes the phone number on each page to a control number. Clicks on ads driven by certain keywords produce results displaying the pages on their server. They tell me they do not mirror or replicate the content, but just pull it from the page dynamically. I’m not sure how they do that but if you go to [B]freemovetexas1.reachlocal.com[/B] you can see the resulting page when someone clicks on one of their ads. The problem is the Pagerank has dropped from 4 to 3 in two weeks and the natural results position for certain major keyword phrases has dropped from #6 to #12. The main url is [B][url]http://freemovetexas.com[/url][/B].

Can you tell me if what they are doing is duplicating content, a practice that Google frowns on, or exactly how they are pulling in this content? Any insights on why this drop may be happening?

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