Last summer, due to a DDOS attack emanating from IP addresses connected to 4chan, AT&T temporarily blocked access
to 4chan... without giving a full explanation for why. If you know 4chan, you know why this is a bad idea. It took very little time for the 4chan community to retaliate (and, as you know, no one "retaliates" like 4chan "retaliates"), and only a few days later, when AT&T explained what happened, did 4chan back off. So, now comes the news this weekend that Verizon Wireless is blocking 4chan
(this is just Verizon Wireless, not Verizon), and the company seems to be making the same mistake. No clear explanation of why. I'm sure there's a reason that Verizon Wireless can give, but not explaining that immediately seems like a huge mistake. Update
: Not surprising, but looks like the same reasoning as AT&T's temporary block
last year. Still doesn't explain why the company wasn't upfront in explaining it.