Or if you want to do them singly in the library view there is a sprocket in the top right hand corner of each pic. Hover over that and some drop downs come up. If you go to the get links one a box opens and the bottom option is the image code for forums. Just normal click it and it copies, then paste it in the text box.
That sounds easy enough, still means going into Pishbucket everytime though
The way i used to do it was upload the pic from the camera to my pics, pic would have a simple tag like SAM_0000 (Samsung camera), upload the pic to Photobucket, log out of Photobucket, type out the URL with the relevant tag in the post (i had the [IMG] URL memorised), if i wanted to post a pic that i knew was in Potobucket i could look up the tag in my pics without touching Photobucket.