Aye, 

To get a picture of your Island, first use the Camera icon located in the right lower corner of your iIsland. That will snap a picture of your current tank and add it to a folder in your facebook Photo section. You can also use any screen capture software you'd like. You'll have to save the picture yourself though. 

[img]URL[/img] 
Use the above code to post a picture of your Island. 
URL = The url of the picture 

Get the actual image url of that picture, not the url of the facebook page it is on. To get the image url: 
For Internet Explorer: right-click the photo and click properties. 
For Firefox: right-click the photo and click " copy image location" (NOT copy link location) 
5. Copy and paste the image url. It will start with http and end with jpg. 
6. Post that complete image url between two image tags , with no spaces. 
[img] url goes here but with no spaces [/img] 

You can also use a photo hosting service. TinyPic is a quick and easy free service and there are others like imageshack or photobucket. The choices is yours. In most cases the host will provide the code for posting direct to a message board and all you'll need to do is copy/paste into a thread. Makes it very easy. 

Why aren't my photos working? 
Common mistakes when trying to post pictures. 

1. Using the link to your happy island game, instead of a link to a screen shot. 

2. Using the link to your facebook photo album, instead of the actual image url itself. 

3. having spaces between your image tags. 

4. Missing the slash on the closing tag [/img] 

Sometimes your post will disappear after posting your picture. To fix this, post first without your picture and then go to your post and edit it by adding your picture in the format described above. It should work just fine :)

Thanks 

R.C