Here's the rub in using this site. You are giving up a lot of rights!
By displaying or publishing ("posting") any Content on or through the ImageShack Services, you hereby grant to ImageShack and other users a non-exclusive, fully paid and royalty-free, worldwide, limited license to use, modify, delete from, add to, publicly perform, publicly display, reproduce and translate such Content, including without limitation distributing part or all of the Site in any media formats through any media channels, except Content marked "private" will not be distributed outside the ImageShack Services.
In addition, folk can but prints, mugs or tea-shirts with no royalties to you!
ImageShack and/or other Users may copy, print or display publicly available Content outside of the ImageShack Services, including without limitation, via the Site or third party websites or applications (for example, services allowing Users to order prints of Content or t-shirts and similar items containing Content). After you remove your Content from the ImageShack Website we will cease distribution as soon as practicable, and at such time when distribution ceases, the license to such Content will terminate. If after we have distributed your Content outside the ImageShack Website you change the Content's privacy setting to "private," we will cease any further distribution of such "private" Content outside the ImageShack Website as soon as practicable.