You have two options. Either you write your own opinion despite the fact the topic is for example fans or haters Epple, and then you always get a minus (but I write what I think), then you can not see the positive karma.
Either you carefully Imerese and where to write that so that you meowmie asshole not noticed in any case, podmahivat and adapt to the current mood of a topic and his readers. Then you accumulate may be advantages, and in exactly the same manner you have to write all the posts and comments, that God forbid not to write something than minus assholes disagree. In the same manner while continuing to sign until you gain more than a couple of hundred votes plus in the fucking karma, then almost all will not care (as bombarolo today, epic fail in the history of spamming, and he don't give a fuck, will continue to cover those related laptops and gadgets to write (good way)) and it will be possible again to write what I think.
To me that's abhorrent to go through the second option is to write an opinion when I want it, not when it coincides with the opinion of the cons of silent assholes, so I stopped at the first option, as a side effect, have no for a year from registration to publish and post a comment every five minutes (so far, and then once an hour is probably further). And I'm not trololo, and I try to write useful comments, and people agree that it is useful comments, it is evident from the vote count — a lot of them, but minus the silent assholes win in this fight, because I'm not going to adjust their opinion under their jet.