The best replacement for broadcasting is narrowcasting.

The best alternatives to broadcasting are rated as following:
★★★★★  narrowcasting
★★  sky television
★  multicasting
★  cohn
  journalism
  mediacom
  analog
  public broadcasting

Your alternative for broadcasting is not listed? Suggest!
Speaking about broadcasting, one probably shouldn't forget about ustream.

Other search terms related to broadcasting and their ratings are:
★★★★★ ustream
★★★★★ xsplit
You have in mind a companion for broadcasting and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of broadcasting in all years. Click on graph for more.
broadcasting
narrowcasting
sky television