Its dead easy, basically an online photo album that you can share, or share selected pictures.
Go to www.photobucket.com and create an account. Once this is done you can either upload the pictures directly to your account from your PC or, if like me, you don't have access to a computer you can email them to your account.
To share the pictures all you need to do is click on the 'share' or the 'IMG' code associated with each photo and it will automatically copy the link for you to then Paste into your post on any of the forums.
Hope this helps