There are also apps for iPads and Droid tablets that will scroll your lyrics.
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Hi Eddie. yes I have been investigating these for my purely acoustic gigs.
Here is a good write up on the four of them
http://www.stevemacdonald.org/tablet/apps.htmlI plan to scan in all the bits of paper I have lying around. For my "backtrack" gigs I still plan on using my scrolling chords and lyrics which scroll along in time with the backtrack.