Thread:Project:Support desk/Are there Advertisements or Pop-ups on Mediawiki pages?/reply (3)

Exactly as Krinkle says: No adverts at all - and also no pop-ups.

But: MediaWiki is very customizable. So, if you want it to work somehow differently or to look different, then you can also modify it to do that or look like that. Even if you wanted it to show adverts, that would be possible.