Personally, I would not use this extensively, but comes handy for the odd image/icon you need to host somewhere

e.g. Hosting a little BAG logo for a customised signature (such as the one underneath my picture on the left nav bag of this site)

• Save the image in Google Drive (a png file tends to work fine everywhere)
• Find the Folder ID on Google Drive

• Build a Hosting URL concatenating:
  • https://googledrive.com/host/
  • The folder ID on Google Drive + /
  • The file name (better name it with extension, so it’s easy to locate later)