When not using an Adobe product, such as Photoshop, TIFFs are ideal if you wish to retain as much information as possible in the file, for future editing, including layers. Basically, TIFFs are used for image editing.
If you wish to print the image and are completely done editing it, TIFF is not ideal. Because it is such a large file, it will take forever to print. So, convert it from TIFF to JPEG, and print away.
http://www.youtube.com/watch?v=49_BX4HeIw4 –> For all you photographers, here’s a guy with an English accent explaining the difference between JPEG, RAW, and TIFF files, which most DSLR cameras shoot in.