With the expansion of my own computer capabilities, I see how many people now upload and work with photography much larger than the previously standard 1024-wide. The forum rules have been modified to allow for photos to be posted to a max of 1200-pixels wide. Here is the specific rule now:

Size. With rare exception, do not post any photos larger than 1200 pixels wide or 800 pixels high unless you are specifically looking for assistance where the original file is necessary. For those unique shots (unique aircraft or individually appealing photo), do not post many in sizes larger than 1200. Threads with a collection of rather "normal" photos (as defined by NYCAviation moderators) will be sent back to the photographer for resizing. (Revision 1/10/10)
I hope this pleases you folks and I'm sorry if we've been behind the curve!