Have you had any experience or interaction with these 3 brands? Is there any precedent that would lead you to think we would want names & emails, or have any intent of spamming anyone for that matter? The reason the 3 of us choose to join forces on this project is because we all try and engage with entrepreneurs, not market at them.
I am sorry if you have had a negative experience in the past with sponsors, but this offer my friend is a genuine one. Last year we attended multiple BarCamps and had an absolute blast, the feedback that we got from the communities was overwhelming appreciation and hope that we would come back again next year.
We are not asking for everything, in fact we only want to be involved with what you need help with. I think its so AMAZING that you have such overwhelming support from sponsors in your community, but in our experience there are still tons of barcamps struggling to solve a few pain points. Or in some cases (like BC Charlotte), they don't even want our monetary support but just wanted us to come participate and meet their community.
The bottom line is, this is something new and we are going to make mistakes & learn as we go. All i know is that we want to find a way to make barcamps even more awesome...and i hope people are willing to work with us to help make that possible.
Jonathan