Not sure where you are running into trouble, but on the TinyPics.com site using a PC when you upload a pic you see this...
If you grab the "IMG code for forums" that looks like this [I MG]http://i63.tinypic.com/30t52m8.jpg[/IM G] you just drop it, as is, into your post (your actual link will have no spaces in the IMG tags)
Short of using a snipping tool, there doesn't seem to be a way to capture an image from IG. Am I missing something more obvious? Most forums or webpages allow you to r-click and "copy image location" which gets you a link that can be used to post it. But with IG when you try this you get some javascript that is pretty useless. I end up having to snip it, paste it to my desktop, upload it to TinyPic and them post it from there.
There has to be an easier way...
I'm sure it is intentional as they are ad driven and they want people to have to come to them to see their content. But in truth it ISN'T their content, it is the content of the poster, so I feel no guilt taking it and reposting it.
I'm not big on guilt anyway, but there it is.
I can Not over express how much I love this vid. Watched it 10 time at least...