best nine

 best nine  is a popular aggregation and summary post practice on Instagram, supported by services like https://2017bestnine.com/ (archived, now taken over) which only ask you for your username then return a 3x3 grid of your 9 most liked photos of the year, a photo-specific Year in Review.

Examples
Example result from the 2017bestnine site.

default (with number of likes) and photos-only versions:

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Indieweb BestNine
A basic implementation of BestNine for indieweb sites was put together by and is hosted at https://bestnine.indieweb.app/. (source code)

To use it you must have support for:
 * rel=next/rel=prev
 * microformats2
 * like