Facebook is massively engaging, but the ads they allow to appear on the site are incredibly off-putting.

I personally don't mind ads on sites, but the Facebook ads that I'm fed all appear to be for slimy businesses (I'm constantly seeing ads for Canadian Pardons that are using what I believe to be unauthorized images of celebrities) or have seemingly low-to-no production values.

They need to fix or curate the way ads are displayed, because I think it will eventually become a hindrance to their success.