I am guilty of ending sentences with prepositions and am aware when I do. Many times I will even tell you I know but pointing it out within parenthesis following the preposition. However, to correct the sentence structure would result in writing that sounds very formal. Take Russ's earlier phrase "of which businesses are not aware." If you know me, you'd know that's not the way I talk. I would simply say "businesses are not aware of." Yep, I know that wouldn't be correct (or maybe it would thanks to TH) but ooooooooooh welllllllllll.
Another thing...I have never been a good writer although my English grammar, most often, is to be commended. So for me to just get my thoughts down in print that is understandable (I hope) is an accomplishment for me.
Now...here are two struggles of mine....knowing when to use "affect" vs. "effect", and knowing where to put quotation marks. Should the comma have come before or after the " following the word effect?