During my efforts to post pics to the forum I registered for PhotoBucket only to find out it is no longer a free service. I was able to register and utilize Imgur, not to difficult to navigate in, just remember to re-size images before copying into the forum. Regards Doug
+1 for imgur, I use it all the time. There's an 'embed code for bulletin boards and forums' option that is exactly what you need to copy/paste here to get the image to appear.
You don't have to sign up, but if you do it makes it a lot easier to keep track of all your images, create albums for them etc.
And here's a pro tip which applies to any image links: if you don't want to resize your images (or forget to), you can also force them to appear on the forum at a sane size by editing the code as follows:
[img]your URL here[/img]
to
[img width=800]your URL here[/img]