All they need to do is SEARCH. The information is there for anyone including the questioner.
OK... searching Google tonight for "opera bookmark import" brings up one (yep, count it, just 1) "official" Opera website listing - but that only applies to how to import bookmarks (among other things) into Opera 12.10. After that listing come many dozens of "unofficial" hits (I gave up checking them after the 7th page of listings) that discuss a variety of user or self-proclaimed "guru"-experimented methods for trying to import bookmarks into a variety of Opera versions (some Presto, some Blink) of various vintage... but nothing "official" appears from Opera or from its forums. Then, directly searching Opera's forum for that same term results in two pages of listings on all manner of things, most (if not all) of the listings unrelated to the OP's original question.
There's a real problem surfacing here, and it's not this user. He simply asked a neutral question and stated he had unsuccessfully searched for an answer. I repeated a similar search to the user's and found no "official" of Opera-forum answer listed either, relevant to his needs. That user then came to the "Opera" forums and asked for an answer to his question. After getting no response in a short timespan, he went out on the web and did find an unofficial answer from somebody unrelated to Opera or its forums, a link to which he then posted here, along with some critical comments about Opera's lack of support for such a significant topic. The only response to his stated need was a rather snarky comment telling him to relax and wait for the next version... moreover, this is certainly not the first time this kind of thing has happened to a forum questioner.
And Opera wonders why it's still stuck around 2-3% market share? Opera wants to attract new users... but new users constantly have "old" problems that are new to them. Even if a forum responder has seen a particular question asked a hundred times before, unless the forum search engine can readily locate those threads or unless there's a relevant Opera FAQ or Opera forum readily-available answer listed out on the net, all those hundred prior forum questions (answered or not) are of no value to that questioning user. Berating him for unsuccessfully searching or telling him to wait for the next version serves no useful purpose without telling him when that release will be... because he probably also doesn't know all things Opera, such as when that next version will come out or whether the timeframe fits his immediate needs. The net effect ends up being alienation of such users, which is a net PR "Fail" for Opera.