YFrog:Twitter Image Sharer
ImageShack is an image hosting website on the Internet. They have a subscription service, but the majority of their revenue is produced from advertising related to their free image hosting. YFrog is brought to you by ImageShack, one of the largest image host on the web.
The main page has a file selection field, where the user may select the image file to upload. The image file format must be either JPEG (JPG), PNG, GIF, TIFF (TIF), BMP, or SWF, and the file must be smaller than or equal to 5 megabytes. Uploaded BMP and TIFF (TIF) images are automatically converted to PNG format.After the file is uploaded, the user is redirected to a page containing different versions of URLs to the uploaded image. These URLs are preformatted in a variety of HTML and Bulletin Board code snippets, which can be used to hotlink them on websites and message boards. These URLs are not listed publicly, therefore only the user and the people the user gives the URL to can know the file location.
Images are stored on ImageShack indefinitely unless the image or the user who uploaded it abuses the Terms of Service. The image will be rendered inaccessible if the image uses over 300 megabytes of bandwidth in a one-hour period. If the image in question is not accessed a single time in one year, they will remove it.
There is also a free registration service that gives the user the ability to see and delete their previously uploaded images.




