Lately, I've gotten fed up with msnbc.com ads loading.  I literally can't navigate to various pages because of some ad that's loading that doesn't return or takes a long time to load...this blocks the page critical render path.  When I am able to navigate, the page is slow to load.

Just for experimentation purposes, I decided to trace the # of ads calls for one msnbc.com page:  http://www.msnbc.msn.com/id/20908040/.  These are the ads/tracking calls that I can figure out.

http://ads1.msn.com/library/dap.js

http://c.live.com/c.gif?NC=1180&NA=1154&PS=73547&PI=7329&DI=305&TP=http%3a%2f%2fmsnbc.msn.com%2fid%2f20908040%2f&RedC=c.msn.com&MXFR=5F32F3A5A34B40E48EB2FDF5AF165D2A

http://c.msn.com/c.gif?NC=1180&NA=1154&PS=73547&PI=7329&DI=305&TP=http%3a%2f%2fmsnbc.msn.com%2fid%2f20908040%2f&MUID=1573C590AF614B208DA25D84307D4C64&ANON=A=0A698E2AA7E0013276472F74FFFFFFFF%26E=602%26W=3&NAP=V=1.6%26E=5a8%26C=4_Hja6rIhQfMuBvcJq_lttS3EyZFvtHPeA6ES3sHcBOcXk29ZVk2hA%26W=3http://msnbcom.112.2o7.net/b/ss/msnbcom/1/G.9-Pd-R/s92285868180372?[AQB]&ndh=1&t=24/8/2007%2022%3A57%3A41%201%20420&pageName=Story%7CBusiness%7CForbes.com%7C20908040%7CDocking%20the%20yacht%3A%20Cribs%20of%20billionaires%7C&g=http%3A//www.msnbc.msn.com/id/20908040/&r=http%3A//www.msnbc.msn.com/id/3032072/&ch=Business&c3=Matt%20Woolsey&c4=Business&c5=Forbes.com&c7=hmedium&c8=N&c15=20908040&c16=Story&c18=14&c26=Forbes&c39=ON&c41=1.5%7C60&s=1280x800&c=32&j=1.3&v=Y&k=Y&bw=1600&bh=756&ct=modem&hp=N&[AQE]

http://rad.msn.com/ADSAdClient31.dll?GetSAd=&DPJS=0&PG=NBC9DK&AP=1390

http://c.msn.com/c.gif?NC=1180&NA=1154&PS=73547&PI=7329&DI=305&TP=http%3a%2f%2fmsnbc.msn.com%2fid%2f20908040%2f&MUID=1573C590AF614B208DA25D84307D4C64&ANON=A=0A698E2AA7E0013276472F74FFFFFFFF%26E=602%26W=3&NAP=V=1.6%26E=5a8%26C=4_Hja6rIhQfMuBvcJq_lttS3EyZFvtHPeA6ES3sHcBOcXk29ZVk2hA%26W=3

http://ad.doubleclick.net/adj/N2992.MSN.com__/B2117819.12;abr=!ie;dcadv=1281487;sz=728x90;ord=589955861?

http://ad.doubleclick.net/adi/N2992.MSN.com__/B2117819.12;dcadv=1281487;sz=728x90;ord=589955861?

http://m1.2mdn.net/879366/flashwrite_1_2.js

http://m1.2mdn.net/1281487/indexing_costcalc_728x90_18k_032907.gif

http://a.rad.msn.com/ADSAdClient31.dll?GetSAd=&DPJS=0&PG=NBCLB1&AP=1071

http://b.rad.msn.com/ADSAdClient31.dll?GetSAd=&DPJS=0&PG=NBCNB1&AP=1071

http://rad.msn.com/ADSAdClient31.dll?GetSAd=&DPJS=0&PG=NBCLB2&AP=1025

http://a.rad.msn.com/ADSAdClient31.dll?GetSAd=&DPJS=0&PG=NBCBB3&AP=1023

http://b.rad.msn.com/ADSAdClient31.dll?GetSAd=&DPJS=0&PG=NBCB01&AP=1025

http://rad.msn.com/ADSAdClient31.dll?GetSAd=&DPJS=0&PG=NBC2F2&AP=1025

http://a.rad.msn.com/ADSAdClient31.dll?GetSAd=&DPJS=0&PG=NBCTB1&AP=1025

http://b.ads1.msn.com/ads/11586/0000011586_000000000000000304421.gif

http://a.ads1.msn.com/ads/52962/0000052962_000000000000000317206.gif

http://ads1.msn.com/ads/309/0000000309_000000000000000432487.gif

http://a.ads1.msn.com/ads/3669/0000003669_000000000000000384164.gif

http://b.ads1.msn.com/ads/1/0000000001_000000000000000482644.jpg

http://ads1.msn.com/ads/1/0000000001_000000000000000430107.gif

http://global.msads.net/defaultads/ads/defaultads/1025.gif?C=P&E=10&N=F04

http://b.rad.msn.com/ADSAdClient31.dll?GetSAd=&DPJS=0&PG=NBCMSB&AP=1089

http://ad.doubleclick.net/adj/N4518.MSNREGULAR/B2478583.8;abr=!ie;sz=300x250;ord=405406142?

http://ad.doubleclick.net/adi/N4518.MSNREGULAR/B2478583.8;sz=300x250;ord=405406142?

http://m1.2mdn.net/879366/flashwrite_1_2.js

http://m1.2mdn.net/1522752/UTour_Best_300x250.jpg

http://context3.kanoodle.com/cgi-bin/context.cgi?id=78053631&db=context&query=*general_network&cgroup=biz&format=table&numresults=5&width=459&bordercolor=7788AA&fillcolor=FFFFFF&title=1&signup=1&newtarget=1&fontsize=10px

http://context3.kanoodle.com/cgi-bin/context.cgi?id=78053631&db=context&query=*general_network:premium&cgroup=d_businessforbes&format=sky&numresults=5&width=160&bordercolor=7788AA&fillcolor=FFFFFF&title=1&signup=1&newtarget=1&fontsize=10px&titlecolor=0000ff&linkcolor=0000ff

http://business.msnbc.us.intellitxt.com/intellitxt/front.asp?ipid=7540

http://business.msnbc.us.intellitxt.com/v3/door.jsp?ts=1190699864812&pagecl=7471&ias=5a415f643cfd47a8b70b6cb0db1a0f79&ipid=7540&refurl=http://www.msnbc.msn.com/id/20908040/

http://images.intellitxt.com/ast/js/vm/func_200709182130.js

http://business.msnbc.us.intellitxt.com/al.asp?ipid=7540&di=4126929,4126928,3970782&syid=0,0,0&adid=201922,201922,201922&cc=us&rcc=us&hk=1&ts=20070925055745&so=0&mh=188c63522807304a86e08bb4603147c9&pvu=0254f4f8b19d4efa8839952a21155000&pvm=01a1d62cd407cbdb52df33fa3f13de3c&ias=5a415f643cfd47a8b70b6cb0db1a0f79

For...uh..."experimentation" purposes, I added the following domains to IE's restricted sites:  (*.207.net, *.2mdn.net, *.advertising.com, *.atdmt.com, *.atwola.com, *.doubleclick.net, *.intellitxt.com, *.kanoodle.com, c.live.com, *.msads.net, *.ads1.msn.com, *.rad.msn.com, ads1.msn.com, c.msn.com, rad.msn.com, *.pointroll.com, *.revsci.net, *.llnwd.net, *.ugamsolutions.com, *.zedo.com).  I am utterly amazed at the phenomenal improvement of the msnbc.com webUI experience (likewise, I was amazed that I put up with such a bad experience for so long).  The site loads reliably and loads starkly faster than before...ads are now static images and load deferred, but at least they do not block the page from rendering.  As an added bonus, the Flash-heavy ads are gone...and IE doesn't freeze anymore due to inerrant Flash ads.