Originally Posted by Cindysphinx
If your are on vacation and someone asks your rating, isn't the correct answer "I don't have a rating, but I play with a bunch of 4.0s back home."
Ideally yes, but on Craigslist you will see "me 4.0, you be at least 3.5" and on many tennis websites, your profile allows you to enter or select a number, not write an essay. That is the only thing that can be used in the search criteria. If you leave it empty, people are not going to find you, even if the site allows you to leave it empty, and many don't.
If my regular partners are on leave, and I see a "me 4.0" on Craigslist with a mention of the same area I live in, I will reply to that guy. I don't care if he plays USTA 4.0 or not. Most of the time, I have found that such people will be 3.5 to 4.0 and we have a good time.