From a dead/moved/removed thread:
How to upload images using Imgr
1. Upload to Imgur.com
(a) Go to http://imgur.com/
(b) Click "Upload images"
(c) Click "Browse your computer"
(d) Locate your image, select it, and click OK. This varies with your operating system and where your image is.
(e) Click "Start Upload."
2. Copy URL
(a) Look for "Share this Image" on lower right of screen.
(b) Click in "Direct Link" box.
(c) Copy that link with CTRL-C or right-click and "Copy."
3. Put it into bulletin board code:
(a) Type [ img ] [ /img ] (without spaces).
(b) Click between the two tags (between ] [).
(c) Paste the link with CTRL-V or right-click and "Paste."
-or-
(a) Click the IMG button on your visual editor ribbon.
(b) When the dialog opens, paste your link into it and click OK.
4. Load a bowl of Royal Yacht and do something that stimulates your mind. Computers are for gerbils
How to upload images using Imgr
1. Upload to Imgur.com
(a) Go to http://imgur.com/
(b) Click "Upload images"

(c) Click "Browse your computer"

(d) Locate your image, select it, and click OK. This varies with your operating system and where your image is.
(e) Click "Start Upload."

2. Copy URL
(a) Look for "Share this Image" on lower right of screen.
(b) Click in "Direct Link" box.

(c) Copy that link with CTRL-C or right-click and "Copy."
3. Put it into bulletin board code:
(a) Type [ img ] [ /img ] (without spaces).
(b) Click between the two tags (between ] [).
(c) Paste the link with CTRL-V or right-click and "Paste."
-or-
(a) Click the IMG button on your visual editor ribbon.

(b) When the dialog opens, paste your link into it and click OK.

4. Load a bowl of Royal Yacht and do something that stimulates your mind. Computers are for gerbils