you have to upload them to some off site like photobucket, then copy the direct link and when posting a reply- look for the yellow landscape icon with what look like a hill on it and paste the direct link in that to post a pic...
That doesn't look good, and although the picture is not clear, it looks much worse than the ones I have seen posted on the SIGForum. Is that showing the whole length of the slide lug in front of the notch peeled off like a planer peels off a wood curl? I think the SIG guys were referring to the length of the displaced material, not the depth, when they told you 1/8" to 1/4", and it looks like that would qualify. If you have anyone close to you with some photographic skill, I would send the picture to them directly...because that looks like something they would want to replace.