While some have complained about how Boomerang is normally only available on relatively-high-tier satellite and digital cable packages, it should be noted that Boomerang is funded solely by subscription costs; this is why it airs no outside advertising. This happened until November 2013, when Boomerang started arising limited commercial advertising between breaks as part of Cartoon Network's plan to rebrand Boomerang into a family animation channel.
Notably, Boomerang still uses Cartoon Network's classic "checkerboard" logo as part of its own logo; this is perhaps to keep the "classic" feel that Boomerang is meant to evoke alive.
Sometimes, a new Cartoon Network show (usually an import) would air on Boomerang for a few months. This is because some cable systems carry Boomerang, but not Cartoon Network (due to the presence of [adult swim]) and CN would run those shows on Boomerang to give it more exposure.