In the preliminary survey they were asked how confident they were that they would find all the information. Most were 80% confident. They did however struggle, or not find it quite as easy as they had thought. Internet professionals were no exception to the rule.
What is hard about those queries? That's a question I'll be asking you.
It is hard, although some people have managed quite easily to find the answers. Some gave off-topic answers that were as close as they could get, some just couldn't find the information.
I'm still collecting data, if you think you can handle the challenge, give it a shot and see how you go.