I use Chrome a lot, and find that if I don't empty the history every so often, I wind up with 502 errors.
So every so often now, I close everything, and then empty the trash so to speak. I've been using Crap Cleaner for that. Great name for it? I just thought of how that sounds. Oh my.
It's okay to click on the ads though.
I get those from Google, so I think they are safe. It's just people buying advertising on the site.
I would click on them, but I can't. Sometimes I see things I'm interested in, but I can't click them from my site.
If I'm on other sites I do.