Keywords haven't ever been a part of SE Friendly URLs; the SE Friendly URLs makes it so that your forum can be crawled by search engines...
A URL like below IS SE Friendly:
https://www.ubbcentral.com/version7...t/Number/1056/an/0/page/1/gonew/1#UNREADHowever a URL like below is NOT SE Friendly:
https://www.ubbcentral.com/version7...6&an=0&page=1&gonew=1#UNREADThe special characters (?-&) tend to cause search engines to ignore the URL. Additionally for some, adding an "id" name to the URL will cause bots like Google to ignore inclusions of that url.