Two special startup types: the Twitter and the Hoverboard
danshapiro.com
danshapiro.com
e.g.
The Oyster: A species of Hoverboard that appears to magically parse natural language or generic web data but which on close inspection turns out to be a slick-looking wrapper around a rat's nest of Perl regular expressions which are being frantically updated by a harried group of hackers to deal with each "edge case" as it arises.
The Turk: Like an Oyster, but without the regular expressions.
The Esperanto: A Hoverboard that promises to help non-programmers write programs by using "natural" syntax that is "just like human language". See e.g.: AppleScript.
The Gift-Horse Engine: A Twitter that is in fact virally popular, but only because it bribes adopters by giving away something below cost in an unsustainable way.
Ironically, AirBNB is no longer a Twitter startup, but Twitter arguably still is. ;)
(May all be obvious, just my $.02)
A lot of articles seem to try and classify all startups into 2 or 3 types which is honestly pretty silly.
Ali G: "Its a hoverboard" (holding a skateboard with no wheels)
Investor: ".. but it doesn't do that"
Ali G: "Well, it doesn't do it yet. Thats where you come in - with your science"Actually, I would say that the problems twitter is solving aren't terribly difficult. Now, doing it at such a massive scale is very difficult. But I think a large portion of twitter's success is that their solution seems rather easy to implement at small scale.