MIT BBS (Chinese 未名空间, literally "Unknown Space") is a Chinese bulletin board system site.
] and [
] access for public postings, private messaging, exclusive groups (clubs) and, most recently, blogging.
In 2002, the Chinese government blocked access to the entire mit.edu domain. It has been speculated that the main reason is to prevent domestic users from accessing the uncensored political discussions on this forum. Eventually, due to the popularity of the forum and bandwidth limitations, the forum is moved out of mit.edu domain, and acquired its own permanent domain name mitbbs.com.
In 2004, to circumvent the censorship, a self-censored server was opened to facilitate access by users in China.
The forum was started by a handful of volunteers. After moving out of mit.edu, it was run as non-profit supported by donations and limited advertising. Under the current administrator walklooktalk, the last two years saw accelerated commercialization, with more prominent space reserved for advertisers, as well as the creation of a spin-off website devoted to Personal advertisement. Meanwhile, the system underwent frequent upgrades, and large fraction of them caused downtime ranging from hours to days.
The administrators claim both increased advertising and upgrades are necessary to keep up with increased traffic and adding popular new features. However, some users dispute their necessity. The technical handling of the upgrades is also questioned. In a few recent events, the current adminstrator 'Walklooktalk' is also said to play politics to exclude other volunteers, for example 'Ras', from their administrative duties.