When doing your research on who to see, rub one out and get some post nut clarity so your decision making is much more sound (and not driven by your little head).
Browsing while horny usually means anything and everything looks good, and tends to lower your standards or lower your guard versus scammers or the unscrupulous or the "too good to be true" ads.
Note that the above applies best if you're leaving a couple of days or even weeks in between making your decision and the day of your date (personal experience and preference). I personally don't like doing same day dates anymore where I research a lady the day of the date (at the most, I'll look at agencies and ads over a period of time beforehand, and keep a list of prospective ladies; and if my day is free and a lady is available same day, at least I did my homework ahead of time).