Could you explain the BBCode a bit more? I don't mind linking back to Flickr (actually I should probably be doing that regardless) and I may be overlooking some obvious stuff.
But what I do know is that I can get the 1024 code from my photostream directly, and I just know that after all the time it takes to shoot/import/edit/upload/tag there's no way in hell I'm clicking every photo and going to the 1600 or 2048 sizes (that's like 3 pages to click through per photo off the Photostream) when I have my usual 40++ images to share.
If I'm missing an easier path, by all means fill me in! I might just be acting lazy here...