Elder Vaughn J. Featherstone created a scripture memorization program "which basically has you learn 1 scripture a day, review it every day for a week, then once a week for a month, and then once a month for a year." This program has been useful for some people ( http://mormonlifehacker.com/ ).
One website that talks about his system and has links to a working set of flashcards for starting your memorization is https://sites.google.com/site/saintsrevived/kevinh/scriptmem
Someone has also built an app for iPhones / iPads that uses the principles of Elder Featherstone's system: http://www.scripturepowermemorization.com/
I haven't tried either the flashcard or the app version of his system, but it interests me enough to consider it and share it with you.