Reporters and columnists love to use this. It usually goes something like this, “Some say that drinking is bad for you.” Or, “Some say paying taxes is good for your health.”
I’m sure I’ve used it myself, but I try not to. I think readers deserve to know who says it. I’ve started quite a few blog posts to address something ‘some say’, but when I did my research to figure out exactly who said it, I no longer thought it was worth writing about.