You most certainly don't need to be "spot right on" with your information, that is what a discussion is for. People toss out different ideas, believe me if you are wrong someone is going to point it out. If you are certain about something, explain your position and leave it to the readers, that is all you can do. But I have found that usually there is a mixture of good and bad info and it gets worked out in the discussion. There are people who flip out over the incorrect information but we are humans after all, we have flaws. But to disuss a subject with a number of people and see all different views is where you LEARN if you ask me.
I have asked questions and gotten a bunch of different advice and then waded thru it and came up with what I thought was best, and in some cases some of it was tossed in the garbage, so be it.
Hang in there and participate, that is what is important.