Honestly, no, at least not out of fear of getting a thread. There was a little while several years ago, before I had any personal familiarity with the site, when I worried that I would end up being posted here. That was mostly because of all the drama around Keffals in the media at the time, though, not because of anything that I actually did. The way that the site was talked about really was, unironically, like an "Autistic Illuminati" who targeted innocent people for no reason and destroyed their lives. I was sure one slip-up would cause something to happen. I guess I thought I'd be identified, tracked down, lose my job, and maybe have a bomb or two planted in my mailbox? Nobody seemed all that clear on what would go down if you did get a thread, but stories focused on extreme cases where someone got SWATed, went into hiding, or felt driven to suicide, so I thought it had to be some serious shit.
Now, it's pretty obvious why nobody talks about what usually happens. You've actually got to be pretty fucking outrageous to be a lolcow if you aren't already a public figure for unrelated reasons, and you've got to be that outrageous publicly, consistently, and (usually) proudly. I've done some weird, stupid shit in my life, but none of it's particular funny, at least not in itself. If I went online and tried to defend it, maybe, but I'll just admit that it was destructive to myself and others whenever anyone brings it up. Lolcows typically have to be reactive, too, if they aren't regularly creating bizarre content or shitty artwork, because there's got to be some constant source of milk in order for a thread to survive into adulthood. I can laugh at my own bullshit if someone's joking about it, and I just delete, block, and get back to whatever I was doing if someone sends harassing messages. Most importantly, I've never said shit online that I wouldn't say in person, because it's safer to just assume anything you say can be traced back to you than it is to risk slipping up and having privacy measures fail.
On the other hand, this site has changed how I look at minor public figures (YouTube celebrities, famous bloggers, etc.) to an extent. I just assume now that most of them are going to have a scandal eventually, because they usually do.