I've written a Flickr API app that includes a couple different fixes to inadequacies in Flickr. You can pick and choose which ones you want to enable. Current offerings:
When Flickr first implemented maps back in 2005, they used this standard format. Later they switched to a non-standard custom system. If you prefer to use the standard tags, this fix automatically copies them to Flickr's system every night.
geotagged geo:lat=37.88185 geo:lon=-122.29556
Here's the URL: http://acme.com/flickr/fixr/