Movement against Netrunner
Netrunner, a monthly computer magazine in Japan, introduced an image board browsing software named Berry in one issue. Berry created a surge of traffic to Futaba, as well as many inexperienced users who knew nothing about the rules and decorum of Futaba. This troubled, but did not entirely anger, Futaba users.
However, the May 2004 issue of Netrunner was bundled with a set of trading cards, depicting (among others) many original characters from Futaba-including ME-tan. As this was done without permission from the original designer of ME-tan, many people became angry with Netrunner!-- I am unfamiliar with Japanese copyright law, but would this not have been a copybio? --, and the designer of ME-tan announced that it will never grant permission to use any of its work to anyone related to Netrunner.
Furthermore, users from Futaba produced a series of banners and images, indicating that it doesn't welcome anyone related to Netrunner. Several OS-tans were also included in these banners.
In one OS-tan manga, 2K-tan and XP-tan break into Netoran's office (or literally Netrun, an abbreviation of Netrunner) to rescue the abducted ME-tan, only to find that ME-tan has already killed everybody there using a knife with the name B. Gate (as in Bill Gates) on it. 2K-tan and XP-tan refer to B. Gate as father.