Wes Tatters wrote:
gzip can be problematic is all its forms - I would leave it off for DNN and PAGEBLASTER - as well as any whitespace filters.

Westa

 DNN gzip was long well known of its bugs - broke AJAX and resulted in malformed tags.
http://www.mylifebbs.com/2011/09/dotn...

So PageBlaster was the only hope we had for optimizing DNN site. However, god knows why page blaster gzip suddenly will resulted in missing html tag in DNN too! out of a sudden.
http://www.snapsis.com/Support/tabid/...

Which lead to a big serious problem: DNN site with gzip enable will not be able to use Google Plus Button - gosh.
http://www.gentex.com.au/info-center/...

Conclusion: It is not DNN and Page Blaster Problem but DNN core problem where some tag will gone missing if gzip is turned on. This is why after 3 years Gzip issue has been reported in DNN and no solution was found.

Temp Solution: I did a lot of learning and experiments to figure out how to enable iis7 gzip for dnn. However, iis gzip does not gzip all the time - there are few conditions where:

1. The page has been requested at least 2 times (by default)
2. CPU load does not exceed 50% by default.

Which is a bad news for a light weight server with many websites inside...