mqstout: Selective purchasing such as purchasing only what's on GOG can send a stronger signal.
Hawkbit12: How so?
How about you elaborate on what this whole boycott is about? Most people here (me included) seem to have no idea what you're talking about.
Themken: Why should Blizzard be boycotted?
Lucumo: Probably because it has become a garbage company that stopped making good games after the acquisition, has terrible business practices and also sues and/or pressures people and companies, putting people out of jobs as well as destroying fan efforts? Those seem like good enough reasons at least.
That describes (almost?) all big game publishers.