He's using a very similar name and icon to the other uBlock. I don't think Google likes that in its store.<p>At least change the icon. And I would just name it uBlock Zero or something else entirely.<p>As a side note: gorhill, you were specifically criticized by others before for using the symbol μ in your extension's name, because that symbol doesn't exist on the keyboard. And now what do you do? You adopted "u" instead in the beginning, but started using <i>subscript 0</i> in the new extension. Come on, man! Just use a name that's easy to write and tell others about!
Sorry to hear about this, I had an extension taken down by the Chrome Webstore for a name violation. I did get a "Removal Notification" e-mail for it, maybe yours got lost in the mail. I hope someone from Google gets back to you soon!