A gentleman recently posted this on a forum and I think it's fabulous enough to share.  Excellent points, and so very true! I've trimmed it slightly because it was a tad too long to post here.

 
1. RECOGNIZES THE ESCORT AS AN INDIVIDUAL.
First and foremost, a good client is a man who recognizes that his paid companion is an individual woman and he respects her as a person. This usually requires some maturity in the client (which is why a lot of escorts don’t want to see men under 30), along with having had some solid relationships with women (also part of the reason for the 30-and-over rule). Often, men who haven’t had much experience with escorts don’t understand this concept. They see escorts as a commodity or service and not as a personal relationship.  

Some men refuse to see any escort as more than a living sex doll. These men are almost universally loathed by escorts. Good clients realize that they’re arranging to meet a person and start a relationship, much like dating. They view the search for an escort as informed blind-dating, not shopping for tires.

2. PAYS CORRECTLY. A good client shows his respect in two tangible ways. He always pays the correct amount without any fuss and he is clean. Many escorts require payment up front in an envelope. A good client understands her rules and follows them to the letter (this usually involves not drawing attention to the moment). This establishes a lot of trust with her and he shows that he respects the way she chooses to run her business. (There are escorts who don’t require payment up front, but a client who does so anyway always wins points.) Even if he chooses to pay at the end of their time, he does so quickly and without a lot of discussion. It goes without saying that the amount is always correct.

3. HE IS CLEAN. This is not always possible for a client coming straight from the office or an airplane. In that case, he will take advantage of any shower facilities he or the escort has available. It’s only polite and a good client is polite! Many escorts like to keep mouthwash or sample-sized toothbrushes/toothpaste handy as well. A good client intuitively knows why those items are there and uses them if he needs to.

4. DOESN’T HAGGLE. A good client does not haggle or negotiate. An escort’s rates are her rates. Period. If he wants a better deal, he can become a regular client and try to negotiate from there (with a better chance of success) or he searches for someone within his financial range. All escorts are luxury items, no matter what they actually charge. A paid companion is not a basic necessity for life. Good clients recognize payment for what it is – a charge for an out-of-the-ordinary personal experience. In the US it’s considered rude to haggle. I don’t know about other countries.

5. …doesn’t push boundaries. A good client does not try to push boundaries. A good client doesn’t try to force his way past whatever boundary lines, BE IT EMOTIONAL OR PHYSICAL, an escort decides to draw in her work. Some men think such boundaries are there as a personal challenge. Others feel they can use money as a tool to bribe their way past the comfort zone. These men aren’t good clients. A good client respects his companion and realizes there’s a reason for how she structures her work. An escort can create any number of boundaries for herself – from safer sex to intimacy to travel arrangements; she makes her decisions based on what she feels is best for her well-being. There are clients who are invited to cross the lines.

6. …UNDERSTANDS SCREENING!! A good client understands why an escort needs to screen and willingly shares the information she requests. Of course, good clients are also worried about what happens with their information. They will do their best to find escorts that seem reputable, reliable, selective, discreet and trustworthy. An escort who wants to attract good clients will make sure she doesn’t cause doubts in an already-skeptical potential client. Men who don’t care about an escort’s safety won’t be willing to give even minimal screening information. They aren’t good clients.

7. …respects an escort’s time. A good client is respectful of an escort’s time. He doesn’t waste her time with endless e-mails/phone calls before meeting (unless she openly encourages the correspondence). He doesn’t waste her time with numerous cancellations and rescheduling. He doesn’t break an appointment without calling first. He is on time for appointments; not early, not late. Nor does he try to extend his allotted time with her (he can ask, but she may have other plans). If she doesn’t like last-minute appointments, or appointments on certain days/times, he doesn’t make those requests. In short, a good client treats an escort’s time as valuable to her; much as his time is probably valuable to him.

8. …is discreet. A good client is discreet. Many escorts don’t like explicit reviews or don’t allow any reviews. A good client will respect her wishes about reviews and behave accordingly. Discretion also extends to any time they spend together in public. No escort wants attention drawn to her while she’s with a client. Likewise, she doesn’t like spending time with an overly-prying client. Although a good client is genuinely interested in his companion, he understands the line between personal interest and being intrusive.

9. ..understands the mystery of chemistry. A good client recognizes that this is a very personal business. Sometimes people have chemistry, and sometimes they don’t. Not everyone will always get along with everyone else. Sometimes the client grates on the escort’s nerves. Sometimes she can’t find his wavelength. Good clients understand that professional escorts make every effort to make him happy. And if they don’t click; it wasn’t meant to be. Although they probably will not see this particular escort again, good clients capable of recognizing these concepts. Such mismatches are not reflections on either party. (I’m simply talking about a lack of magic happening, not instances where either party was harmed in some way.) …is good company. A good client is nearly always a positive person.  

10. …doesn’t need to make bribes. Good clients are not necessarily the ones who tip or bring gifts. Often they are. But sometimes tippers or gift-bearers do this because they know they’re difficult to deal with and are trying to smooth the way. For most escorts, a man is a good client because of the quality of his company and not the quality of his material gifts. …sees the escort more than once. Nearly all good clients become good clients by seeing an escort fairly often. Building a relationship takes time and once is usually not enough to produce more than a fond memory. Of course, a first visit that lasts several hours or days goes a much longer way to establishing the relationship than one or two hours.

11. The Final Factor What makes a good client often has a lot to do with what the escort wants out of a client. Although the factors I list seem to be pretty universal, the final factor of what makes a good client is the escort in question. One man could see two different escorts and behave in a completely polite and respectful manner with both; yet one escort will like him more than the other escort. It comes down to personality. After all, this is a people business