Best RED flags for new clients, I'll start

There are all the classics, like debating line items and cost, but I have to say my newest and largest RED flag is if a new customer says they've felt like they were spied upon by any of their privious tech support.

This isn't to say it doesn't happen, but if a customer has it in their head that IT is digging into their data for fun or proffit ... it doesn't bode well for the relationship.

What are your favorite red flags?