This is required, there are no exceptions. If this does not work for you, then Premier Partners is not for you.
Any content is acceptable, expect for porn sites.
Keep this in mind, if you join, any content may be displayed at any time. If you use any other size, it will be resized to this. There will be a smaller logo image that is required to be display to the left of the button, there is no excuse to remove this logo, and removal will get you removed, as well. We need to this to help promote each other. For every display on your page, you earn one exposure on other sites.