As much as I appreciate the recently updated European roads in Yahoo! maps, and therefore also in the Flickr map, I hardly use the built-in geotagging feature of Flickr.
If you want to geotag an entire photo set it works great. Once you’ve opened up the map organizer you can easily drag & drop all photos onto the map. But if you upload just a single photo and want to geotag it, the loc.alize bookmarklet gets the job easier and faster done.
In Flickr you need to go through Organize > wait > Map > wait > select photo > drag to location. It’s one click too much and therefore takes too long. The usability of loc.alize is much more convenient, it allows you to access the map and assign the location directly in the photo page: loc.alize > wait > select location > save.
Considering the amount of geotagged photos in Flickr I’m maybe wrong and most user’s are happily geotagging with the help of Flickr’s map. On the other hand you read the default loc.alize link “See where this picture was taken.” quite a lot under Flickr photos…