Your warning points are only visible to yourself, moderators, and members of staff; other regular forum members are not able to see them. Under normal usage they are accompanied by an explanation -- you should receive a private message from the moderator issuing your warning, and if a warning point is currently active you can click it to also view the explanation in your warning history.
Warning points are almost always temporary and will automatically expire after a certain amount of time -- most typically less than one month, and often only a couple of days. Common reasons for a warning include abusive or anti-social behaviour, spamming (assuming it isn't bad enough to warrant an immediate ban instead), or excessive cross-posting or topic-bumping after a less formal warning has been ignored.
There was a problem however with points already applied to some user accounts when we upgraded to the current forum system a couple of years ago; the explanation accompanying these warning points is no longer available, and the points do not automatically expire.
The warning point gasto is asking about was one of these, and it has now been removed from his account. Any other users who have similar warning points may also have them removed simply by politely asking; you can either respond to this topic with your request, post your own similar topic in this forum, or contact a moderator or member of staff directly.
@Nathan2222: This topic is unrelated to the reputation system (what you referred to as "post voting").
@gasto: I've removed your warning point -- you only needed to ask politely. I assume you were just venting, but the odd way in which you asked at your odd selection of passive-aggressively-offensive tags really didn't help your cause -- you might want to refrain from insulting the people you're asking for help in future.
To respond briefly to the implication of your selected tags, we're very happy with our large team of volunteer moderators. Many of them are experienced industry professionals, or experienced professionals from other related fields, and they all volunteer some of their precious free time to offer advice and help out our regular members.
This is a grown-up forum where both regular members and forum moderators are allowed to express their opinions, and to disagree with each other as long as no rules are broken, but if you have a problem with any particular moderator you can have any individual decision reviewed, or the overall conduct of that moderator reviewed simply by contacting any other moderator you're comfortable with, by contacting one of the senior moderators (washu, swiftcoder, or myself) or an active member of staff (Gaiiden, mtanczos, or myself). Moderators can and have been issued with their own warnings if they over-step the mark.
I can also see from your tag selection that you appear to have singled out Tom Sloper. Tom can sometimes be a little blunt, but dedicates a lot of his free time to helping others and always tries to offer helpful advice, and personally I think we're very lucky to have a seasoned industry veteran (with a whopping 86+ titles shipped!) advising beginners free of charge. I have also seen that in a couple of instances where he misunderstood a question or incorrectly ventured a guess to answer a question he wasn't really familiar with Tom happily posted to apologise and retract his original statement; hardly an arrogant act as you seemed to be suggesting.
Anyone else with outstanding warning points held over from the old system:
Unfortunately there's no (simple) way of automatically detecting and removing these points, and given they're completely harmless we don't want to waste developer time and effort on a solution, but all you need to do is ask politely and we'll happily remove these points for you.