Reviews of 2017 shows can be found at the following links which are constantly updated throughout the festival, so keep checking back.

In English:

Michael Calcott's Fringey Bits

Fringe Review 

Prague Youth Theatre Blog

Prague.TV

WeirdPrague.com 

In Czech:

Proti Sedi

Divadelni Noviny

Kulturio.cz

In German:

Prag Aktuell