How do you know if you have pissed off the wrong person(s)?
When it tends to be a member of /b/, the bowels of the internet, the place known as the Internet Hate Machine in which no prank goes too far and cross the boundaries of bringing flame wars into real life.

AT&T has learned that most valuable of lessons.
For reasons that are still unclear AT&T had decided to block the /b/ and another channel from it's AT&T broadband customers. ...for a period of 12 hours before they quickly fixed it. They said it was done because of either DDos attacks against 4chan or because DDos attacks where coming from 4chan... Either way, they fucked up, badly.
Within hours tens of thousands of customer complaint calls were made and plans of attacks were in the works.
The first of which was the digg article from CNN iReport in which it stated that the CEO Randall Stephenson of AT&T was found dead outside his home due to a cocaine overdose after partying all night with male strippers. The Digg on the article is funny because people are talking about how they will miss him and how they are dumping their stock. It's hard to say if these are trolls or just naive people who believed the article.
4chan4ever <- The new twitter account on which plans of attacks are being made.
Officially, there is a ceasefire but some are still planning mayhem.
forgot to mention this the ED page on things http://encyclopediadramatica.com/AT%26T _Blocks_4Chan
List of areas affected. http://z6.invisionfree.com/ProjectATT/i ndex.php?showtopic=11
The following are links to news articles on it and the message boards of when the chan members are/were planning their strategies of attack.
http://disc.420chan.org/net/index.html
http://www.anonnewswire.org/entry/2 009/07/27/technical-details-of-att-block ing-of-b/
http://www.abovetopsecret.com/forum/thr ead485711/pg1&addstar=1&on=6793318#pid6793318
http://insurgen.info/wiki/AT%26T
http://mashable.com/2009/07/26/report-a tt-blocking-4chan/
http://la.metblogs.com/2009/07/26/is-at t-blocking-4chan-in-socal/
http://www.techcrunch.com/2009/07/26/at t-blocks-4chan-this-is-going-to-get-ugly/
http://888chan.org/i/res/118339.ht ml
http://legi0n.hostei.com/chan/i/res/9.h tml
http://digg.com/tech_news/AT_T_blocks_4 chan/
http://status.4chan.org/
http://s6.invisionfree.com/ProjectATT/i ndex.php
http://tech.slashdot.org/story/09/0 7/27/054230/ATampT-Blocks-Part-of-4chan
http://www.inquisitr.com/30689/censorsh ip-comes-to-america-att-blocks-4chan-b/
http://www.centralgadget.com/att-blocki ng-access-to-portions-of-4chan-2336/
http://echochamber.me/viewtopic.ph p?f=9&t=43091
http://www.examiner.com/x-4865-Christia n-Worldview-Examiner~y2009m7d26-ATT-bloc king-img4chanorg--when-freedoms-are-abus ed
http://news.google.com/news?um=1&ned=us&hl=en&q=4chan&as_qdr=d&as_drrb=q&cf=all&scoring=n
http://www.dailykos.com/storyonly/2 009/7/26/758177/-Why-we-need-net-neutral ity:-ATT-began-censoring-the-internet-to night-
http://consumerist.com/5323430/att-repo rtedly-blocks-wildly-popular-and-deeply-o ffensive-website
http://forums.somethingawful.com/showth read.php?threadid=3177263
http://forum.thedailyshow.com/tds/b oard/message?board.id=story_suggestions&message.id=10751&jump=true#M10751/
http://squidman.extremscorner.co.cc:808 2/
http://www.merit.edu/mail.archives/nano g/msg19609.html
http://www.nowpublic.com/tech-biz/t-blo cks-4chan-org-prepares-will/
http://www.ireport.com/docs/DOC-304620
http://www.youtube.com/watch?v=3ap6bHbJ eig&feature=player_embedded"

AT&T has learned that most valuable of lessons.
For reasons that are still unclear AT&T had decided to block the /b/ and another channel from it's AT&T broadband customers. ...for a period of 12 hours before they quickly fixed it. They said it was done because of either DDos attacks against 4chan or because DDos attacks where coming from 4chan... Either way, they fucked up, badly.
Within hours tens of thousands of customer complaint calls were made and plans of attacks were in the works.
The first of which was the digg article from CNN iReport in which it stated that the CEO Randall Stephenson of AT&T was found dead outside his home due to a cocaine overdose after partying all night with male strippers. The Digg on the article is funny because people are talking about how they will miss him and how they are dumping their stock. It's hard to say if these are trolls or just naive people who believed the article.
4chan4ever <- The new twitter account on which plans of attacks are being made.
Officially, there is a ceasefire but some are still planning mayhem.
forgot to mention this the ED page on things http://encyclopediadramatica.com/AT%26T
List of areas affected. http://z6.invisionfree.com/ProjectATT/i
The following are links to news articles on it and the message boards of when the chan members are/were planning their strategies of attack.
http://disc.420chan.org/net/index.html
http://www.anonnewswire.org/entry/2
http://www.abovetopsecret.com/forum/thr
http://insurgen.info/wiki/AT%26T
http://mashable.com/2009/07/26/report-a
http://la.metblogs.com/2009/07/26/is-at
http://www.techcrunch.com/2009/07/26/at
http://888chan.org/i/res/118339.ht
http://legi0n.hostei.com/chan/i/res/9.h
http://digg.com/tech_news/AT_T_blocks_4
http://status.4chan.org/
http://s6.invisionfree.com/ProjectATT/i
http://tech.slashdot.org/story/09/0
http://www.inquisitr.com/30689/censorsh
http://www.centralgadget.com/att-blocki
http://echochamber.me/viewtopic.ph
http://www.examiner.com/x-4865-Christia
http://news.google.com/news?um=1&ned=us&hl=en&q=4chan&as_qdr=d&as_drrb=q&cf=all&scoring=n
http://www.dailykos.com/storyonly/2
http://consumerist.com/5323430/att-repo
http://forums.somethingawful.com/showth
http://forum.thedailyshow.com/tds/b
http://squidman.extremscorner.co.cc:808
http://www.merit.edu/mail.archives/nano
http://www.nowpublic.com/tech-biz/t-blo
http://www.ireport.com/docs/DOC-304620
http://www.youtube.com/watch?v=3ap6bHbJ