Correct. I am using postimages.org which is a free, easy to use hosting site. I use Nikon ViewNX to re-size my photos, then post them on postimage. Postimage has several ways to share a photo but I use "Hotlink for forums".
I have tried to use the "Attachments and other options" on Tool Talk but it has never worked for me, even when other people have used it successfully.