I'm flattered there are people who look at what I post. Thank you so much!

"Do you upload each pic to Postimage individually, and then copy / paste the link, again individually, to your message on this site?

I use a program like Bulk Image Downloader or DownThemAll! or OneClick! to get the links for all the pictures I've found over the years all at once, save the links to a document, and then copy and paste the links from the document to postimage.org, and then copy and paste the links from the Direct Link button all at once. It sounds like a lot of work, but it really isn't.