Why don't sites more often block (or just show a message to) users of Adblock? Is that traffic more valuable than not? Are they hoping visitors will link articles to non-Adblock using people? It seems to me like there is a value in users who don't see your ads, or you'd just block them.

I subscribe to Arstechnica premiere to remove the ads, I have Adblock disabled on overclockers.com.au, The Verge. I subscribe to offtopic.com at a level that removes ads. I contributed to the Penny-Arcade ad-removing kick starter.

Everything else has its ads blocked because you need to prove your worth and trustworthiness to me after two decades of sliding in to the abyss.

If you don't want me, block me. Don't let me see your content.