One thing that needs to be added to the list is ZOOM's billing practices and poor customer support. ZOOM collects money for annual subscriptions, sends an invoice to show that the subscription has been paid, but fails to move the subscriber into the subscription plan they paid to have.
ZOOM handles this by having you call into Billing, wait 22 1/2 minutes on hold listening to an obnoxious piano melody, only to tell you to wait so another 22 1/2 minutes. Once speaking with the answering service, they fail to contact you or resolve the issue.
It's a great way to make money. Collect money online, provide a way for those that are having an issue with no real way to get the issue resolved, and continue with their business as usual.