For Amazon Mechanical Turk (Mturk). Places an unobtrusive button on survey pages which provides quick access to copy your mTurk worker ID.

Edited by Tjololo12: Hover highlight for easy copy-paste or drag and drop. Does not show on mturk pages.

Edited by Swole_hamster to add more domains, other tweaks.

Code fix for Firefox by mmmturkeybacon!

This script is under a Simplified BSD license. This essentially means anyone can modify it or use it or make derivatives of it!

> Copyright (c) [2015], [Happy Hamster Goods]
> All rights reserved.
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> * Redistributions in binary form must reproduce the above copyright notice,
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