FREAKING OUT!!!

So I am unable to locate some of my pictures from the 4th of July and I have just reformatted my memory card, so they are gone. I thought I had downloaded all of them and boy was I mistaken. I am hoping I actually downloaded them on my other computer. I guess that is what I get for being too hasty and deleting my memory card. Does anyone have any good ideas about where to save their pictures other than discs? KaReena had saved hers to an external hard drive and it crashed. I do have some saved online, but my picasa web album is full. Let me know all your great ideas. Thanks!!