I have exported images from Lightroom 3 to Flickr, assigning them tags via the keywording function in LR.
The images show up as tagged correctly in Flickr.

However, when I attempt to create a new gallery by using flickr tags, it only brings up one image, leaving behind the other 14 with that tag.

I'd appreciate any assistance on this problem.

Also, assuming I am able to get this working, when I add new images to Flickr with that tag, will the gallery, that I embed in my webpage, automatically update or do I need to edit the code and re-upload that page?

Cheers,
Jo