Textbook Goliaths: You're Dancing on Thin Ice
bookxor.blogspot.com
bookxor.blogspot.com
IMO, you should have included the basic description of your business at the end, instead of going all mysterious. Like from your website:
-Professors post course content.
-Bookxor collects feedback and analytics from students and colleagues.
-Professors use feedback to retune their content, share and collaborate.
And having taught calculus out of the umpteenth edition of one of these books -- they often introduce mistakes! I taught out of the eighth edition of a mainstream calculus book and they got the statement of Taylor's Theorem (which is a big theorem) WRONG. I think it could not be more obvious that all these revisions are useless to students and teachers.
Big textbooks are just so... drab and generalized. The self-publishing revolution is coming, and I'm hoping a lot of passionate experts take advantage of it and write smaller textbooks that teachers can use and students can buy (for a lot less).