Transparent scientific usage as the key to success of the Virtual
  Observatory
  Nowadays, Virtual Observatory standards, resources, and services became
powerful enough to help astronomers making real science on everyday basis. The
key to the VO success is its entire transparency for a scientific user. This
allows an astronomer to combine "online" VO-enabled parts with "offline"
research stages including dedicated data processing and analysis, observations,
numerical simulations; and helps to overpass one of the major issues that most
present-day VO studies do not go further than data mining. Here we will present
three VO-powered research projects combining VO and non-VO blocks, all of them
resulted in peer-reviewed publications.
