What is the max level in Zuma Blitz?
Yes, the maximum level in Zuma Blitz is indeed 80. After reaching that level, you can no longer level up. You CAN choose to become a "Zuma Master" and return to level 1, in exchange for a shiny gem on your Zuma Blitz profile.
This site details all of the levels in the game: http://bchantech.blogspot.com/2010/12/zuma-blitz-level-up-table.html