Try right click on link and open in new tab.
Let me know if it works.
If not I would have to get some service as photobucket or picasa...
You need to copy the link and paste it into a browser. If you just click it, even opening it in a new window, the "referrer" information is retained and you'll get the NO HOTLINKING message.
I still think it is very annoying.
But I see the problem with hotlinking just images. But just posting the image and not giving a source you might technially be violating copyright. I do encurage others to use my stuff for non commercial purposes (e.g. forum posts) but the source needs to be mentioned.
If you post a lot outside of HBT and want to show images you may have to host them somewhere else. Some forums do allow image attachments, which is nice, but not all do. They might be a disk space or admin hassle.