tiktok, we don't mind giving recommendations, that's what we do here, if you are recommendation a site you have successfully used, then referring it to our readers is fine as long as it is not your own website, as then it is no longer a recommendation but a sales pitch. On the other hand, when you ask people to contact you via PM for more information, it appears that you have a vested interest.
The only exception to this is in the case of recommending real estate agents to our readers. As this site is provided by a real estate group, they frown on Honda salesmen on their Mercedes showroom floor trying to sell Hondas (online or via PM).
SOME PEOPLE TRY TO TURN BACK THEIR ODOMETERS. NOT ME. I WANT PEOPLE TO KNOW WHY I LOOK THIS WAY. I'VE TRAVELED A LONG WAY, AND SOME OF THE ROADS WEREN'T PAVED. ~ Will Rogers