I tried for ages lol Have almost got the hang of it now...On Flickr on the top of the photo you want it says sizes (or similar) click on that and then select medium. Scroll down and you'll see a long code, copy this to the thread and your pic should show up
I have the same problem and haven't figured it out yet. I used flickr to post a link for some photos, that was all I could figure out. Did you look in the Introduction section? I did that, but I'm not that technologically advanced, so I gave up!
I would love to see Louie's ears on a big pic alright, they look pretty awesome in your avatar!