I like how it allows the girls to post ahead so us mongers can plan but how annoying are the ones who abuse it just to post an onlyfans link or selling something other than an actual date

That's the problem with Tryst, too.  It's full of OF ads.  Some of the posts don't even have phone numbers, which you'd think would immediately disqualify them from posting.

It's been a growing problem, especially with sites who play both sides from the middle; they require clients to pay for a membership to see xxx content or write a review while they also charge the providers for advertisement. Ultimately, they error on the side of the providers, since so much more of their revenue comes from them.  

 
Sites like TS4Rent allows girls to never even leave their location while listing travel dates but they aren't even traveling. If you look at the home city and map you can usually confirm quickly if they are in fact traveling or not. Also, you can often check their social media to see if they're traveling. Are they in the city they should be in according to the dates? If not it's a money grab for you to follow their OF page.

Yes, the girls try to gauge interest in a city to see if they want to visit with the “traveling to” nonsense. If they get a lot of responses from a city they posted they’ll actually go. If they don’t, their travel plans change. Hope you didn’t plan on seeing a girl who said she was coming to your city and she blew you off. Pretty common practice. It’s the biggest reason I don’t use that site.