That is not a sentence. It is not even a fragment, as the colon does not delimit examples or characteristics. It is, at best, a heading.

Here is a sentence that would have made not sense ten years prior: Twitter reduces Android technology to competing code names.

Oh wait, it would make sense, because its a sentence, and the subject and verbs are identifiable.

Get off my damn lawn.
----EB Sun Jul 22 09:01:51 2012

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