Security concerns over EXIF data
When you upload images, the EXIF tag data contains info from the camera including if your camera is enabled with GPS, a spot on location.
This is only worrying if you're going to post something specifically expensive which will remain in location. Last week I published an instructable for a recipe using expensive rare ingredients - it's not past the wit of man to take the EXIF GPS data from the image and visit that location.
Because instructables are a how-to to do it yourself at home, I don't think there's any need to hold this information. I know the burden could be left with the author to scrub his images but this could be automated within the image upload system when you process 'original' images. If it's a specific location that is required in an instructable you could just add it to the text.
So my question is, can you look into implementing it and if possible scrubbing the hundreds of thousands of images currently on your servers. If not, I may need to go through a few of my more recent ones and do a bit of scrubbing myself which may delay things a little and there's always a danger I'll accidently forget one time.