I think it worth noting that the process varies depending on whether you are using your computer or a mobile device. I often use the mobile app in conjunction with my desktop because that tends to be the quickest way to get pictures posted. I will take pictures with my phone, upload said pictures to the Imgur app and then log into Imgur on the computer to copy and paste the BBCode directly into my post. (
Peregrin
, didn't you make a short tutorial awhile back?)
When I use my phone to share a picture on the forums, I have to click the "Share Direct Link" button and copy to clipboard. I then click on the Image insert button in your forum post and paste the link that was copied to your clipboard. Now I have had some issues with this working reliably in the past. Most of the time it works fine, sometimes it doesn't though. When it doesn't, I just put off sharing a pic until I can reach my desktop.
That all being said, Imgur is still my favorite image hosting site and provides one of the best services in that regard (my opinion, of course). It provides its services for free, you have unlimited storage, the interface is simple to use, and it provides a relatively seamless mobile and desktop app integration.