I would like to point out a couple recent enhancements that you will see on almost all post and pm editors. These features are meant to make it easier for sharing photos here on CR.
The first is a little icon on the editor tool bar. Clicking this will open a popup window that will allow you to browse through your photos in your user album. Once you find the photos you are looking for, just click the photo and it will automatically put the image tags in the post/message you are composing.
Second, toward the bottom of the editor, you will see a photobucket logo. By clicking this, a box will expand and will allow you to log in to your photobucket account. You can upload new photos from CR directly to photobucket, you can then browse your photobucket albums. Once you have your photo you want to use, simply click on the photo and you will be given the URL with the image tags already added that you can copy and paste into the message you are composing.
Here is a screen shot showing the two new features: