Popular DNS service OpenDNS is currently blocking all images on imgur.com including almost all of the logos used on this site. This is only a problem if you use OpenDNS as your preferred DNS service. A workaround is to use your internet service provider's default DNS server (192.168.0.1) or another DNS server such as Google (8.8.8.8) or Cloudflare (1.1.1.1).
If you didn't understand a word of that you probably have no problem!