Almost internet user know about wordpress.com as free blog hosting that use wordpress blog engine. But do you know that we can also use wordpress as free image hosting. Actually it's not only image but also document and music. Yup, wordpress.com users can use wordpress.com as free media (images, document, musics) hosting. It's possible because wordpress allow you to upload file media when you write a posting.
The great thing is wordpress not only offers upload image but also allow you to manage images. It's like image hosting service. As note wordpress.com give each user 3 GB user space. It's more then enough to save your images.
How to Use Wordpress.com as Your Image Hosting
It's not difficult. You will learn fast if you don't know about it.
Login to your wordpress.com account and you will take to dashboard
Add Image

To upload image you can choose Upload menu from drop down on the right top. Another way go to Media > Add New on left Sidebar
Click "Select Files" to choose your image you want to upload. Click "Selet Files" again if you want to upload another image. Maximum upload file size is 1GB

If you are using flash uploader which is use as default file upload by wordpress, you will see upload image proccess. After finish, wordpress will show you information about the file include with direct link.
You can use this direct link image on your blog, website, forum, etc.
Manage Image
To manage your images go to Media on left sidebar. If you have images then you will see all files that you've uploaded to wordpress.com

Hover image or title and you will see menu according to the image (edit, delete, and view)
It's pretty simple. I hope you can do by yourself if you want to try or use wordpress.com to store your images online.