Why would anyone care or hate what somebody has posts on his wall ?
I don't think the problem is when "somebody" makes retarded posts or tweets or whatever. I think the OP and other guys are just annoyed by the fact that the majority of people who use this stuff use it for stupid and irrelevant things.
I'm not a fan of social networking and I don't have a Facebook or Twitter account and I prefer to keep it that way. All of my friends are on my contacts list on my cellphone and I actually like meeting people instead of pandering to guys on the internet, who I'll never meet anyway.