Ok, I joined Twitpic to see what was going on and I don't think you can share photos on forums with it. I was able to display a thumb nail version of the photo but not the complete photo.
If you want to show the thumbnail sizes of your photos, you could try clicking the '+' button on the right side of the twitpic page for the drop down menu to show the 'html' code, (which if for web pages only), and copy ONLY the section of that code that I have in bold below.
This is the html code.......
<a href="
http://twitpic.com/show/thumb/1d2h4j.jpg" title="Share photos on twitter with Twitpic"><img src="
http://twitpic.com/show/thumb/1d2h4j.jpg.jpg" width="150" height="150" alt="Share photos on twitter with Twitpic"></a>
You will end up with this .....
http://twitpic.com/show/thumb/1d2h4j.jpg
Now type
before and
after the above code......so you have this......

Ignore and do not add the
$ after the
If you are not sure if the photo will work, you can hit the 'Preview' button first instead of the 'submit' button. <<<<< Tashas' tip of the day!
But I think it would be much less effort if you just signed up to a photohost.
