The user-editable encyclopedia for hashtags found on Twitter, tracking 17,463 hashtags for 6,368 users.
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You can add quick definitions from our home page or via Twitter, but signing up on WTH?! allows you to add even more content, like expanded descriptions, related hashtags and links.
2. Contribute to hashtag pages
We track trending hashtags, but it's up to you to help us define what they mean. Use one of the many tools we have available to define hashtags, create context and add resources.
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Twitter Bot
Follow us on Twitter
Look up hashtags on Twitter by sending a direct message to our WTH?! bot.
GreaseMonkey Script
Install the script in Firefox
Turn hashtags in the Twitter web interface into redirects to WTH?! pages.
Firefox Search Bar
Install the WTH?! search engine
Search for hashtags directly from the Firefox search bar.

