Especially when asking users to clarify their idea, if the original submission didn't include an attach/screenshot, it would be very helpful to let them add it afterwards and/or in the comment thread.

Would be nice to have an option like:

Settings > Feedback Forums > [] Allow end-users to attach files to comments.

Same here: totally crucial for us too..

This is totally crucial for us. I do not understand nobody want this implemented. We talk about issues with customers here and we need screenshots with their comments. They can not upload it to comments. They stop using UserVoice, which will lead also us to leave UserVoice and stop paying.

When updating an idea’s status, allow the admin to attach screenshots or files.

We also need this feature. We release new products from time to time (cg content: textures, scripts, 3d models) and customers are vote for what they need next and in comments add details and images. Now they should give a link to the image but if they have this image on their drive they have to upload it somewhere else and share a link :(

I second this idea. We just had a suggestion to change the company logo where the director suggested we have people upload ideas to the feedback idea. Unfortunately it doesn't look like we can do this via comments.

One user creates an idea and adds an attachment, with a relevant image or document. Admin would like other users to be able to add their own images/files in response to the original idea. Right now there's no way to do that with comments.

When one of our users requests a feature, we would like to be able to add a comment with a screen image of our proposed solution attached.