I use Imgur. My posting is even easier. Hans wrote, "... This is the link that you put between the image tags. You need the link that has the JPG suffix." I don't worry about that.
I won't explain how to upload your photos to Imgur. Its childish simple. I'll assume you can get that far on your own.
When I am at my computer and supposed to be working, I pull up the Club forum where I want to add a photo. I open a second window for Imgur. I go to the photos I have uploaded ... I just uploaded a screen shot showing my photos on my Imgur page.

I want to post the photo of my GS650 Caf?. I click on that photo and you get ...

On the right hand side, there are various options for using the photo. Click on the one marked "BBCode (message boards & forums)" Its the one that is already high lighted green because I've already clicked on it.
The first time in a session it will prompt you to "allow access"; click yes
Switch back to the Club forum message board, scroll your curser to where you want the photo, and press "control v" and its there.

This is my screen shot as I prepare this message.

Peace & Grease, Dennis