GraphFree would be pleased to work with sponsors for this website. We’re a small operation ourselves at this point, so we certainly don’t mind working with other small businesses and organizations. We’re especially interested in working with sponsors whose products would be particularly interesting to math teachers and students. Products of more general interest are welcome too, though we must insist that any advertising that appears on this site be family-friendly and appropriate for an academic audience.
We have space for two standard 468 × 60 banners already in place, though we could consider alternate formats for the right advertiser. If you think something else might suit you better, please ask us. We don’t want ads that would be particularly intrusive or annoying to our users, but otherwise, we’re open to suggestions.
As for rates, we would have to know more about what kind of package you want (frequency, format, etc.) in order to give a meaningful quote. What we can tell you now is that we understand that there are many places you could advertise, and we’re willing to be competitive in order to earn your sponsorship.
If you would like to start a conversation about advertising on GraphFree, contact InquiSoft’s owner, Donovan Harshbarger. (InquiSoft is the company that operates GraphFree and other related operations.) You may reach Mr. Harshbarger at: