I'm currently searching for a reliable and free file hosting service with hotlinking allowed. After a search on Google, I found that it's really rare to get such free service now days. After get through the search results, I found two candidates that matched my needs. One is FileDen and another is OpenDrive.
FileDen interface is quite nice but after I signed up, I get a lot PHP errors on the page after login. How a bad impression and I have go to my next choice which is OpenDrive. They are offering 4 plans which is Basic, Home, Office and Pro. Their Basic plan is free and exactly fit what I need. With 5GB of storageand 1GB of daily bandwidth, this is more than enough for what I'm looking for.
For more information, you may visit their website at http://www.opendrive.com.