Exclusive contracts
The whole purpose of an open house is not to show you the property. It's for the listing agent and their agents under them to get Byers for maybe this house but most likely for something else.
They're gonna be all friendly and try to be real nice and try to get all your information but you do not have to provide them anything. It is an open house. But for fun you can give them some ridiculous email and a fake phone number because they're not gonna ask you for ID.
The other thing is, you don't want them to know your name because of a contract comes up later and they see your name and you were all excited. They're gonna try to get a higher price
But let's say for some reason you decide you may want to work with these people.
What they may or may not point out to you in the contract is the exclusivity clause. In the contract, there is a choice between being an exclusive buyer to them for a period of 90 days or non-exclusive. Non-exclusive means that you do not have to use them for every transaction or even any transaction without owing them a commission. Exclusive means you're gonna owe them a commission no matter what real estate agent you decide to use as your buyer broker
Exclusive contracts are awful. It's like getting married on the first date. One in 1 billion out.
The standard agreement also provides for what you will pay them to be the buyer broker. The typical realtor is going to charge you 2.5% regardless of the sale price. No agent is worth that kind of money.
Since all commissions are negotiable, negotiate with them. Come up with a fixed fee or hourly or even a lower percentage, but think about the percentage thing, the more you pay the more they make. But isn't their job to get the property for you at the lowest price?
Ask questions, shop around, do your due diligence because you don't wanna date someone that you end up hating.