Wow... It’s very nearly there on your first attempt!
I have a prepared stop word list which so far does the job very well. Below is the keywords that are generated:
Just the sort of thing we’re after apart from it’s just picking out single words and not phrases. So for the key phrase "MODx web hosting" it’s found the words ok:
a,been,get,least,our,them,whether,about,before,getting,left,ourselves,then,which,after,being,go,less,out,there,while,again,between,goes,let,over,these,who,ago,but,going,like,per,they,whoever,all,by,gone,make,put,this,whom,almost,came,got,many,putting,those,whose,also,can,gotten,may,same,through,why,always,cannot,had,maybe,saw,till,will,am,come,has,me,see,to,with,an,could,have,mine,seen,too,within,and,did,having,more,shall,two,without,another,do,he,most,she,unless,won't,any,does,her,much,should,until,would,anybody,doing,here,my,so,up,wouldn't,anyhow,done,him,myself,some,upon,yet,anyone,down,his,never,somebody,us,you,anything,each,how,no,someone,very,your,anyway,else,i,none,something,was,are,even,if,not,stand,we,as,ever,in,now,such,went,at,every,into,of,sure,were,away,everyone,is,off,take,what,back,everything,isn't,on,than,whatever,be,for,it,one,that,what's,became,from,just,onto,the,when,because,front,last,or,their,where
