Great way to view geotagged pictures stored on Flickr. on Google map.

Make sure you add the required tags toany picture (which is good habit any how)
For example
geo:lat=2226735
geo:lan=2226735
Geotagged
Then you need to use Firefox (which is also good habit), and install greasemonkey (same recommendation)
And now go to the site and install the script http://webdev.yuan.cc/gmif/flickr.gmap.user.js (I think there is standalone version, did not try).

That is all, from now on, when you are in Flickr and viewing a geotagged picture (the above tags), you have one more button on top of the picture, near the delete, and it open Google map in the correct location.

Neat.