MyBB Community Forums

what plugin to use this forum's BEST answer feature?

where can i get it and the thanks plugin?

Use this Thanks Plugin :
http://community.mybb.com/mods.php?action=view&pid=82

see MySupport plugin for MyBB 1.6.x and its updated version is yet to be made available for MyBB 1.8.x

see Thanks plugin for MyBB 1.8.x

Thanks does it work like this Mark as best answer feature? which highlights the post and adds a forum icon as well !

^ yes, it does. the plugin is expected to be made available for MyBB 1.8.x in a few months (ref.)

few months? so which one?

^ I was referring to MySupport plugin. however MyBB 1.6.x version's plugin can be tried on MyBB 1.8.x
(requires few manual edits - see replies here & here and there are few more related threads on this community)