I recently migrated to mybb after using PHPBB3 and found tat it is obviously lighter The thing that is questioning me is I have read some where Table or tabular structure in webpage/webpages are not good for SEO and the MyBB Themes are fully tabular will it cause any problems in my SEO for my forums? Please reply
MyBB has css for just about every element of design. It's just not a tableless layout which is garbage for forums. Forums are data placed into tables. There is no better method for display of a forum than by using tables. Tableless forum themes are a gimmick and give you no real benefit for SEO or content delivery.