I like that it's easy to set up with our own domains (we use them as subdomains) so we don't have multiple accounts or anything else when using other providers such as Google Apps etc., also they give you free SSL certificates which is nice! The only thing i dislike about this service was their pricing structure - its expensive compared to others out there but if your looking at getting an additional level of privacy/security then thats worth paying more money IMO.
We've been able to get rid off all those 3rd party scripts from being hosted by us since adding these services into place and now everything runs through Cloudflare instead meaning no malware issues anymore either.