Ubiquity is like M-x for Firefox: https://wiki.mozilla.org/Labs/Ubiquity/Latest_Ubiquity_User_Tutorial (interesting idea but depends on API availability, which many sites lack)
miniblog.
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Delighted to see my markdown post on HN! https://news.ycombinator.com/item?id=8674494 FWIW, markdown's increasing ubiquity offsets its gotchas somewhat.
What licenses say about the author: Public domain: I want ubiquity, BSD: I want to change the market, GPL: I want to build a community.