Duplicate status issue for Image sharing

[jjjjjj]

Hi, I am using Sharekit in my iPhone application for Twitter and Facebook sharing. Both are working fine. But for image sharing in Twitter, I am facing an issue. The scenario is, i am sharing an image with a title. The title of the image will be same all the time, only the sharing image is changing. Its also working fine for first time only. If try to tweet another picture I am getting error message "Status is a duplicate!". And also, the image is appearing the twitter account as a link, not an image. So, is there any way to avoid the duplication issue when image sharing? I want to share different images with a same common message. Is there anyway? Also is there any way to display the image as an actual image in twitter account, instead of a link.

Please share.