If you were starting today a forum, what kind of URL structure would you choose? Will you choose the "include content title in the URLs" or you would prefer to leave it off?
Do you think that keyword rich titles nowdays still have SEO value comparing to a cleaner full friendly URLs structure without any words in them?
Also, if you where running a forum for several years and you were using full friendly URL without including content titles in them, would you consider to change it to "include content titles in the URLs" in order to achieve better SERPs?
And finally the last question... is include content titles in the URLs option is more resource consuming that leaving the same option off?