yeah...curios, that IPB have so much SEO deficits... For me was curios, too, that i have pageviews every day growing, since i using SMF 2.0 - every day was coming more and more visitors! In June 2012 i have 660 USD from Google Adverts! Than, my site was hacked and i changed to vB. Than starts DDOS-Attacks. Two weeks, my site was offline! After that, i was loosing 2/3 of my visitors. Than i take himself the decession, to change to IPB. My biggest Mistake, maybe. My Visitors drop down again almost 25 percent, losing more until now ...but the content from the registered Members growing. But now, my site is not attractive for comercial advertivers like before. In summary, i think IPB have the badest SEO. WP can only alive with plugins, and XF...i dont know... About vB we dont need to talk anymore, since vB SEO is no longer active. But contest is the king, told me an old admin - and he said, it is not depend from the script....