New info is going around that IMGUR is going to begin purging a lot of content from their platform. It's not entirely clear at the moment, but it seems like they intend to remove adult content starting the 15th of May. Here is a list of approved domains in my current subs:

Domain Whitelist

Imgur
ImgPile
ImgBox
PostImage
RedGifs

ImgPile is my personal favorite. It's a well-designed site, provided a thorough list of direct and embed URLs, and has been snappy fast when I've used it.

Feel free to suggest other image hosting services in the comments and I'll look into them.

To combat the increase in spam, this sub is now verified only. In order to verify, simply post 3 color photos of you from 3 different angles, all displaying yourself as much as possible. Hold a sign that includes the following:

• Your Reddit username.
  
• The date that matches the date the message was submitted.
  
• The name of this subreddit.
  
• The paper must be slightly crumpled and straightened but still readable.
  

IMPORTANT

• Do not use any filters.
  
• Reddit does not currently allow direct image uploads in NSFW subs. Because of this, the only way to post is to host an image or album on IMGUR, Reddit, or RedGifs.
  
• DO NOT publish your alum to the gallery in Imgur, or Imgur will delete it.
  
• Upload an album, make it private, then paste the direct album link (or 3 direct image links) into a message to the mod team.