Avoid

This is the list of companies/websites/web services that anyone in their right mind should avoid using. I'll provide the reason for each of them, as separate entries. This is just an evolving list.

1. Wikipedia
2. Quora
3. Google
4. Facebook + Whatsapp, Instagram
5. Microsoft + Hotmail, Github,
6. Apple
7. Yahoo + Tumblr
8. Reddit
9. Internet Archive + WayBack Machine