by default hide the who's online list on the main page

[VaaKo]

how can I by default hide the who's online list in the "what's going on" block on forumhome?

[SaN-DeeP]

remove the code from whoonline on forumhome template :)

[Ntfu2]

AdminCP -> vBulletin Options -> Forum Home Options -> Display Logged in Users?

set that to no

[VaaKo]

No, you got it wrong.
I mean to collapse by default the block, maybe there are too many users online at the moment and it'll make the page VERY long.
I hope you understood.