Seen a font in use and want to know what it is? What the font allows you to upload a picture of the font and it will tell you what it is or what some close fonts are.I use this all the time. You should too…that is if you work with fonts, if you are a marine biologist..don’t bother.
Design Chick's Blogaboo! 
I used to use this site all the time in my magazine design class.