This means "very cool" )))

ЗБС mean: it's very very cool (obscene lexicon)

These are three letters from the Russian slang swear word, that means "very good".

It means rather "really great". Как дела? збс. (I am enjoying every moment of my life)
Quite often can be used sarcastically, though. Дорогая, я проиграл все наши деньги. - Ну збс теперь. (Great, what are we going to do now?)
Погодка збс. Can mean both really enjoyable and utterly terrible weather.
I can't think of a context, where it would mean "something like "f**k it/that!""
The missing letter is "e".
And as to "Зуев, Белкин, Сальников", looks just like a witty way to say avoiding being banned for swaring, but fast googling reveals that there was (maybe is) a programme for gamers about games worthy to buy featuring three hosts under these names.

its short form of "bad" word

the full word must be за+ е+ би+ ....ну и на конце там...

если выкинуть гласные то и останется что то збс

its coming from base form [to fАck]. [за] - ussualy in same situation can mean [over/above]

How are you? Excellent! - same answer in normal form