Fine, throw in my face that this pixiv or twitter content has already been uploaded but don't humiliate me further if I try to update or close the tab saying "ArE yOu SuRe? YoU wIlL lOsE yOuR dAtA..."
My suggestion are:
- If it's going to be a dupe, ask if you want to automatically copy the tags and sources to the content already on the page.
- If trying to close/update the tab with the uploader after it found that it's going to be a dupe, ask if the user want to clean the fields or at least don't show "you will lose the written info" and just close/update it already.