Shitaraba Keijiban(Bulletin Board) (したらば掲示板)¹⁾ is a large Japanese bulletin board website that lets people to create and manage their own boards. It was founded by Hiroyuki Nishimura on March 4, 2000, but has since changed owners several times, mostly recently to “Shitaraba, Inc.” in 2021.

On March 4, 2000, Rental Keijiban JBBS (レンタル掲示板JBBS) was founded by Hiroyuki Nishimura under “Tokyo Access” (東京アクセス), then the August Crisis of August 25, 2001 made its financial situation clear. Then on December 1, 2001, the service was renamed to JBBS@Shitaraba (JBBS@したらば) with the sale to “Shitaraba Communications” (したらばコミュニケーションズ), so board creation resumed.²⁾

The company would then partner with “Media Clip” (メディアクリップ) in 2003, then they were bought out by Livedoor on June 14, 2004³⁾ and lost some data in the read-only server transfer, but the service was later reopened and renamed to Livedoor Shitaraba Keijiban (livedoorしたらば掲示板) by December 15, 2004. As a side note, this was during the NPB stunt and before the securities fraud.

In 2009, the interface was overhauled. In 2013, the service renamed to Shitaraba Keijiban (したらば掲示板) with the sale to Seesaa on May 15, 2013.⁴⁾⁵⁾ In 2018, they were transferred to “Aegate” (エーゲート) on December 3, 2018,⁶⁾ who later became “Phase” (フェイズ) on October 12, 2020. In 2021, the service would be under Shitaraba, Inc. around February 16, 2021, then Seesaa was apparently liquidated in 2024.

When you create a board, you will have the option to select one of the 18 categories below, which will be the board's permanent prefix unless you or the community finds a reason to change boards. The website does allow 'adult-oriented' boards, but forbids you from organizing any form of offline meetups (e.g. dating) as those can be exploited to endanger users. There are also terms not mentioned here.

• All non-Japanese IPs seem to be banned, unless noted otherwise, presumably due to spam.
• Some boards may force you to omit the 'h' from your links as an 'anti-spam' measure.

• Shitaraba Keijiban - The front page of Shitaraba.
• Shitaraba Keijiban on Japanese Wikipedia
• Shitaraba on Niconico Encyclopedia

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