I am sorry but I hate them. The attachment matrix convert pictures into a weird format that is unreadable by a windows picture viewer (and photoshop). I always have to capture my screen and use photoshop to convert the attachments into jpegs. It's frankly a nightmare.
I'm not a fan of attachments either. But when that happens what I do is simply add .jpg after the filename when I'm saving it, and it converts the file to a jpeg automatically
^^Echoes, I never said I screen cap the thumbnails. I was talking about the actual pictures. You can see them alright but if you try to save them the default format is '.php' which isn't readable by windows picture viewer or photo editing programs like Photoshop.
However I'm grateful to kate for explaining how to bypass this inconvenience.