Merkitys is an open source photo upload software for Flickr users for Nokia S60 mobile devices. It allows you to add tags automatically to your photos which you can then be uploaded to Flickr.

The following types of tags can be added are:

1) Locational information
-GPS (with additional Bluetooth GPS device)
-GSM Cell info
-Country
-City
-The bluetooth environment

2) Calendar events
3) User defined tags
4) User defined description

This is a very cool application but the support of devices is currently very limited .

Source: AllAboutSymbian