  In eight years, during the blazar monitoring program performed with the
Perugia automatic telescope, we were able to collect about 20000 $BVR_cI_c$
photometric points, contributing to get knowledge on the optical flux history
of many sources brighter than magnitude $V=17.0$. This intensive and constant
optical monitoring is essential to perform studies and multiwavelength campains
about this class of AGN. We illustrate our program and some examples of data
and preliminary results.
