The 'X' sign on top of the Twitter building was taken down just days after installation.

<div class="block">The &#39;X&#39; sign on top of the Twitter building was taken down just days after installation.</div>

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Company Formerly Known as Twitter Removes 'X' Sign

The brightly flashing sign at the San Francisco headquarters of the company formerly known as Twitter has been taken down just days after installation. The San Francisco Department of Building inspection received 24 complaints about the un permanent structure including concerns about safety and elimination.