well, 4chan had the worst case of DoS attacks on the time reddit line rose like crazy in that graph...
maybe this shed a light on the culprit? :D ...also, fueling the conspiracy theory, the week it was back, moot left a sticky post on /b/ about how much superior reddit was, practically calling out a DoS there. i guess it backfired.
...and maybe we can call it the best marketing campaign ever?