Abstract
We give an overview of the status of blazar research, focusing on the issues concerning unification schemes, and present an overview of our on-going FIRST Flat Spectrum Sample (FFSS) project. The goal of the FFSS is to shed light on the true nature and physical properties of radio-loud AGN through the understanding of the demographics of blazars, resolving the long standing uncertainty about nature of the relationship among power, colors and spectral types. The FFSS is "designed" to give us a true(r) census of blazars. In order to do so, it is crucial to strive to select in an unprejudiced way all "flavors" of blazar (e.g. not distinguish a priori between BL Lac and FSRQ), and to be sensitive to the whole -broad- range of the SED "colors".
