For an incall, what should I look for so that I will not get robed on the first date? I have common sense, but anything else to look for?

Thanks

nothing to worry about.

If she's wearing a Richard Nixon mask and pointing a gun at u,,,,,RUN!!!!

any professional lady wants a new client to feel comfortable and will go out of her way to build a certain level of familiarity/web presents.

Google her contact info, that way you can cross check the different websites she may use regardless of weather they are posted on her website or not.
How easy is it to learn about her and her services/what you can expect when meeting with her?
Does her website have links right to her various profile pages, or do the links go "somewhere else"?
Is she concerned about her safety? Does she ask for provider references? that's a good sign.

Never use just one website for research. Use the information you get when you googling her info, You'll learn a lot based on that.
Hint: If you cant find anything but a single ad, and then the same phone number on another website with a different picture, you might want to wait and see what develops.
; )

When the door opens,if it isn't the girl you were expecting kindly apologize for having the wrong room and scoot. I call bait and switch 'robbery'.

Check her reviews.  Yes, you need VIP.  Just having reviews does not mean they are good.  Sometimes TER does not have the latest price information, you need to check her web site or ad.  
skb

1) Sleazy motels
2) Big guys in the closets or standing in the room to take the money, etc.
3) A girl who says she needs to leave the room -- before you have fun -- to give the money to her driver or something like that

I think you mean robbed.

In any case, stick with well reviewed providers and you'll be fine.

Look for a well reviewed provider above all else.  I would also not bring anymore than the donation into the room with you if you are at all hesitant.  Honestly, there are worse things than getting robbed. If you are not confident about the situation you are walking in to you should probably be looking for another situation..

RUN!!! It doesn't matter whether or not she has a gun. lol

She left the condoms, her cell phone, wine, etc. in the car.  She will be right back.  Yea, right!