To promote World AIDS Day, Twitter has turned itself red, on its home page at least. Moreover, by using the term #red in your tweets, you can turn your own tweets red.
I like this corporate support and it’s an interesting way to bring attention to the day. Looking at the main account @joinred it looks like it’s actually a sponsorship deal with Nike and their Join Red campaign. An interesting and non-intrusive way of advertising from Twitter, at least this first time. Time will tell if this is a permanent addition to their advertising offering services
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