Do you categorize your buyers on your buyers list?

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So I have around 20 buyers right now. On occasion I get statements like "Not to far east" or "no war zones" etc.

I usually reply back thanking them and letting them know I have added them to my list. I then respond to their statements that I have many buyers sending me specific tastes on properties that fit their appetites. I then let them know that when I have properties that I will be having to move fast and I mass email the property specs and photos of my property to all of my buyers. At that point the buyer can look it over and decide whether they would like it or not and it will be a first come first serve basis.

Is this wrong and should I categorize each of them by their specific taste?