Scott: Some observations that I see-your statement:

"It is my understanding that rendering an opinion of title or offering a warranty/guarantee of marketable title constitutes the unauthorized practice of law in the Commonwealth of Pennsylvania."  

This only applies if one is "NOT" authorized- you have to allow someone to render an opinion at some time- I know this relates to only your business- but it does exclude everyone - and I am being picky- (shoot me)

Then you also have this:

"All information contained herein was obtained by an examination of public records in the above named jurisdiction, and is as accurate as reasonable care can make "

I have been advised to include the phrase "Of indexed record"- since we all know that once it gets recorded, it is in the "public records" but if it is not indexed properly- it is hard to find- and you know Joe Public will page through the documents and find what is not indexed!!!  Just some warnings from long time experienced abstractors lending their wisdom- 
Take it or leave it-

Here's hoping all have a happy Holiday and that things pick back up so we can concentrate on "work" instead of who pays and who doesn't once again.

Steve Meinecke