Why shows up: "Yahoo! Answers is currently unavailable" when I want to make comments to the answers?

While it may well be considered 'chatting', that would not make the site give you the 'unavailable' screen. That happens for a number of reasons:

glitch - nothing you can do.

bad cache file - clear ALL cache files and restart computer; try again

too many links - eliminate the links

too much text - there MAY be some type of text limit, though I've never seen it hit.

Oh, and sorry, yes, that is VERY much chatting. This is not a forum where people can argue or discuss back and forth like that - especially addressing each other by name. Yahoo has plenty of forums that work that way and wants us to use them, not this site, for that type of activity. Here, you are supposed to ask - get answers - and move on.

It does strange things. I think it gets mixed up more often if there's a time lapse, as if it randomly forgets where things are pointing to. It is probably just some bug or limitation in the pointing system that relates the comments back to the question.

If want to minimise the effect, I've found copying the stuff out somewhere and then going into additional details and pasting it in and entering it quickly seems to minimise the effect.

Less than optimum design I'd guess. It seems to be very common on systems these days, especially online ones. I think the more engineering style design and accurate functioning discipline is getting lost in the rush for features and user interface. So data in computer systems just disappears, gets truncated, duplicates or corrupts, for no particular reason other than it's not attended to and taken seriously. It does seem peculiar to me, because I'm from a computer system design background and reliability, resilience and accurate function (with thorough testing) used to be important goals in design, but these days people just seem to accept that systems have to be used in particular (undocumented) ways and that work arounds and doing things more than once are OK.

The system is probably constrained to accept only a limited number of additional details, but the limit doesn't get checked in the software and an appropriate message fed back. (That would just be a consequence of weaknesses in both design and testing. (We'd call that boundary value testing. i.e. we'd test that it accepted right up to as many as it could handle and then one more to check that it handled it correctly and gave back an appropriate message.)

It's not really suitable for extended discussion. Forum software is better for that, like on yuku.com for example. Other free or low cost options are Wikis, or blogs. They each have different advantages and disadvantages.

I don't think they enforce the chatting rule unless someone complains. There's no easy way to distinguish between chatting and additional details.

The yahoo answers is intended for questions and answers, but it's only one kind of facility. It could be used that way but other tools used as well. Along the lines of best fit for purpose. But Y!A has the advantage of more general exposure and less kind of "group think" involved with people just increasingly coalescing around common themes than might be the case otherwise.

It does get annoying sometimes, because the quality of the software behind it isn't brilliant and the rules also get manipulated sometimes. And stuff gets deleted and appeals get ignored with no feedback whatsoever. Kind of who shouts loudest and is most censorship and only wanting to permit one view kind of basis.

I've thought of giving up on Y!A sometimes. But it doesn't really matter. We can do what we like within technical constraints, and if people don't like it we can get banned. I'd give it some time and see what happens. I think it is just a technical limitation in your case. You could do related follow up questions and work round it that way.

can't answer, the question was not in english