See the titles in post "the usuals" in http://forums.cnet.com/7723-7588_102-354911.html?tag=threadListing;forum-threads
To see much more, google PHOTO RECOVERY. Be sure you don't pay for shareware unless you're sure it works.
I went to Paris for a holiday and took many photos, but then there's not enough space on camera's memory card, so I went to delete some old photos, but then I accidentally pressed format, now all my photos are gone!!
Are there any way to recover them? Help!