[mhartz]

Wasn't this also sort of a feature with Twitter? iirc the retweet and other now popular features were originally hacked together by users

[xavdid]

The word "tweet" itself came from a 3rd party developer:

> The Iconfactory was developing a Twitter application in 2006 called "Twitterrific" and developer Craig Hockenberry began a search for a shorter way to refer to "Post a Twitter Update."

https://en.wikipedia.org/wiki/Tweet_(social_media)#History

[frabcus]

Retweet was original using the text "RT". Hashtags were also invented by Twitter users.

[FranklinMaillot]

Wasn't the @ also invented by users? I remember it was fascinating to watch this network self organize and create conventions of its own, that are now used everywhere.

[singleshot_]

Seems to me like Jarkko Oikarinen or one of his crew invented hashtags, no? Denoting the context of your communication with something like #warez or #hack significantly predates web2.0.

[soco]

I think reblogs as a technical feature were added first in 2009 by Tumblr and slightly later adopted by Twitter - not that it matters in this context.

[skybrian]

Hashtags were invented. It's a convention that happened to work well with Twitter's search engine.