Genuine question for the leadgen people here. When you buy or build a list, what do you spot check first? I open five random rows and look for where each fact came from. If a row says a company runs Klaviyo, I want the page it was seen on. No source and I assume it was guessed. Curious what other people look at first.

Thing I learned the hard way building lead lists: a company that used a tool two years ago isn't a company that uses it now. Check the date on the evidence before you count a row. Old signals look exactly like new ones in a spreadsheet.