And very nice too.
The built-in support for Postimage on NZFF gives thumbnails only, so you really need to upload 'manually', or replace the image URL with the full image version on Postimage. There's a post somewhere here, I'll try and find it...
I use the
Postimage Windows App, which does everything automatically -- I just right-click on an image file, 'Send to... Postimage' and it uploads and gives me a choice of URLs including the full-size link which is the one I want.
It also takes control of the print-screen button, adding all the options I need, including an automatic upload of all or part of any screen.
Edit:
here's the info on uploading to postimage.