Hey there,
I am the editor of http://EventManagerBlog.com - we are the #1 blog and website for event professionals.
Here is an article on event sponsorship we recently wrote http://www.eventmanagerblog.com/why-event-sponsorship-is-broken
Next week we are announcing a free webinar with Eventbrite on Sponsorship. You will be able to sign up from next Wednesday on the site.
Get in touch if you have any questions.
