I was given this tip by a member of the Arstechnica photo thread and love it.
If you're a user of either Flickr or Picasa, this will save you tons of time when posting to "UBB" type message boards such as this.
OILU - Openforum Image Link Utility
Simply copy/paste the text that Picasa or Flickr gives you as the picture link, paste it into the top box at that page, and hit "process".
You can then copy the "Openforum" text it gives you into a forum page like here at PentaxForums and you automatically have a picture that is also a clickable link to flickr!
Very easy and beats hand-editing links! I was very thankful when they told me about this! Enjoy!
Note -- If you're posting large photos, just add "WIDE" (without the quotes) right after the <IMG> tags that you paste into your message.