Except for the initial chevron, tweets in posts like this one are in plain text, as sent to Twitter. The chevron links to the end product – with its clickable icons and URLs.
> This – http://flic.kr/s/aHsjvBtGtF – is now what I think of when I think of Flickr. —@bryce http://bryce.vc/post/8973621215/the-london-riots-just-killed-flickr-for-me
> “Victoria Park, generously donated to the people of the East End by the eponymous queen, …” @NewYorker (queen eponymous, park not) #nice
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