I'm looking on our forums and I see ads when I click on the website or either some underlined words. I don't know what they are about, but looks they have been added in each vBulletin forum, at least those I've seen. I cleared all caches from my website, probably made a full clean up of the Chrome, but still nothing. It's this only me or everyone?...

If it is only me, can you please give me a method of how to clean this up?

Payed domain or free domain?
If it's free domain, then ads are Normal
If you payed then read the info about your package. If your package is ads free, then talk with one admins or on hotline to get helped.

Edit -: what you mean "our forum "
You mean this samp forum ? If yes
No for me it's clear no ads.

Yes, I just saw that the ads are ******* too. This is getting me pissed off, I don't really know the reason. I'll make a second clean up, then going to test another browser.

I don't see, use some Adblocker? But I didn't seen any single ad here.

There's a virus I remember like few years before that started advertising on all website, I've to re-install my whole OS because of that (Antivirus doesn't detects it)

I don't really think so, it looks fine because it has not affected Mozilla browser, but will it be that bad so it starts removing files from PC or it has nothing to do with the PC files? I just want to not lose my data.

What type of file? Mostly the .exe (extension) files gets vulnerable after any virus.

Well, I don't care about the .exe files, I'm more about on my private files, like photos, musics, but as i said, mostly photos.