Mick,
You could fire off a message to JRP on nikonians and I'm sure he can point you in the right direction. Just click on Team at the bottom of the home page, and click the email button beside JRP's name.
Cheers
Has there been a follow-up on this? I'd use this a lot if made available.
Nikonians requires us to process photos ((maximum size allowed = 300 KBytes , max width = 1200 px , max height = 1200 px; jpeg, gif, zip, tar, word, pdf, HTML) and store the result on our computer, then attach the file to our post on their forums by clicking on their "upload file" button. So, no direct download from PM to their web site. If I understand the issue properly, it seems easy to add to PM as an export option that would automatically make sure the max 300K is respected (this is the tricky part which requires me to reduce the number of pixels and then save it to X% quality and check to see if it fits under 300Kb...if not, then I have to reduce the % quality level and check again...and again... up to reaching less than 300k (although keeping the same number of pixels).
Hope this helps.