  A review is given on the current status and selected results from large VLBI
surveys of compact extragalactic radio sources made between 13 cm and 3 mm
wavelengths and covering the entire sky. More than 4200 objects are observed
and imaged with dynamic ranges from a hundred to several thousand at
(sub)parsec scales. Implications to the VSOP-2 project are discussed.

Astrophysics