Hello For a new project, I need to think about using a new forum script. I currently use Phpbb-seo (see link in signature) works nice, but heavy to administrate, especially for templates. FOr this new project I hestitate between MyBB and SMF; both of them seem extremely modern. Nevertheless are they SEO compliants, in terms of url shortening and dynamic metatags ? THanks for info.
Neither have good SEO by default, but MyBB's Google SEO Plugin by Frostschutz has been really effective for me. http://mods.mybb.com/view/google-seo
What do you mean with "heavy to administrate with respect to templates"?? Template installation is pretty easy in phpBB I think. Further Customization is ok as well, but this always takes time.