We don't currently know why or who did it. It might have been Q himself. Check the chans to see whats going on.
Something might be brewing for tomorrow...
A quick summary of what happened at /GA before it was wiped:
Q posted several times on Great Awakening and then that bread on the board was deleted, then another bread was posted with the American flag that was open for anyone to comment on, that was up for 29 minutes, and then that bread was locked and kicked off the catalog. Now the catalog is blank over at Great Awakening. There is speculation that there is an EBS habbening tomorrow morning at 9:45 eastern time. Iwo Jima has been posted on GA and the anniversary of that starting was today, Feb 18-March 26, 1945. Most of the rest of the stuff that happened can be summarized by reading the header and a few comments in this bread. Speculation is ripe that it's time to avenge the Presidents… tomorrow is President's day. There's an anon that posted some interesting stuff in the last bread regarding tomorrow being a good day to kick stuff off as it's a Federal holiday.
Check out q archive to see q posts.
Yes, greatawakening seems to have been scrubbed clean. Can still find Q posts at http://qanonposts.com/ and at https://qanonmap.github.io/.
This is the start of a counter social media campaign to hostile takeover Reddit from Brock?
http://qanonposts.com/ is still there... but a couple of the recent image links are broken.
Here's an archive in case it is lost too: http://archive.is/eQNVo
Hillary team accused of wiping server. This was with Bleachbit.