The current battle between users on Tumblr and 4Chan can be resumed by a recent blog post by Fred Wilson, a well-known venture capitalist who invested in a slew of Web 2.0 companies like Twitter, Disqus, Delicious or Zemanta.
In a post entitled "self expression matters", he explains why Tumblr is growing fast, very fast and that Facebook (and perhaps Twitter) may well need to take heed of its growth.
Indeed, yesterday was the day when Tumblr was supposed to go down under the weight of 4Chan traffic (essentially DDosing the site) but it appeared that Tumblr users were not going down without a fight and counterattacked 4Chan.
Tumblr is one of the biggest websites in the world (in the top 100) while 4Chan is just outside the top 600 according to Alexa.
And unlike other targets like Gawker, Tumblr is a coherent community and "Operation Overlord" has just proven that. 4Chan has met its match it seems, one with its own "powerful mob dynamic" as Gawker puts it.
Access to both websites appear to be erratic with some accounts on Tumblr.com being reported as dead and ditto for 4Chan's boards.