People complaining about privacy?

[foodlover]

This is towards both males and females since I've seen both do this. Now, we have the creation of social network sites and people post ANYTHING on there that tickles their fancy or will post something that is bothering them. But, than people will complain about not having privacy or hate that people get in their business when they outright post things on social networks that gives the attention of them being bothered by something or someone. I mean, everyone wants privacy and doesn't like people in their business, but if you don't like people in your business, why post something vague about it and such?

Like facebook, people will post something in their status that is either vague or seem to bother them, but when someone asks what is wrong and such, they say it is nothing or that everything ok. Some will complain about being in their business, some will say everything is fine now, but why post it anyways if you are just going to moan about people being annoying or nosy? Same thing with sites like twitter, tumblr, myspace (if anyone uses that still), etc. What is your opinion?
@Lilly: Acquaintances I can understand since you don't know the person well. But, if you don't know someone well, than why add them in the first place since what you post is personal? And also, can't disagree about facebook being a blog, because it is. But, if you are going to get aggravated about people wondering what is wrong, than maybe you should think about what you post. Everyone has friends who respect their boundaries, but sometimes friends will NEVER speak about what is wrong with them upfront in public to friends, but will post it on social networks. Wouldn't you feel like you are seeing 2 different people online and offline?
@Lilly: You do bring up good points, not trying to attack you by the way.