How many sockets in these things hold value? What can be made in them on NL that gives them usefulness??

I like double axe for cta.

Some use for necro beast.

Zerk/ghost spear = ebotd.

Ok thank you so cta/beast/ebotd can be made on NL?

Yes.

5s zerk can made doom

What about 4os do ppl b iso 4os in these? Or bows?

4os eth small crescent can be used for oath, which should hit mld lvl req 49 iirc. might be small market though
4os on bows is the only number of sockets you would want on them: faith/ice/insight/harmony

What about NL I thought faith n ice n insight were ladder only?

u can use google to see list of rune words for each patch (1.09, 1.10, 1.11) as well as ladder-only ones

You are right all those rws are ladder only:

Faith
Ice
Insight
Oath
Infinity

But as Relm said, check on the internet for the rest

Ps 4os ETHEREAL axes and almost all weapons iirc are worth nothing in nl because there are no "indestructible" mod on any 4os weapon runeword (i might be wrong tho, please someone confirm this)