I don't use songbooks myself, because I play concertina while singing, and its hell turning the page unobtrusively! Several people at my local club do use them, and that's OK except when someone can't sing a particular song because he hasn't got the right book with him. I guess that's the difference between an online memory system and passive data retrieval. I never had problems learning words until I started singing in a group - I now find that I rarely sing a song exactly the same twice, not in any really important detail, but in little words - 'and' or 'but', that sort of thing. It's only a problem when there are eight of you on stage, some singing 'that' and some singing 'which', but we're working on it. Generally though, no we don't use lyric sheets (except for the Welsh song, but that's another story).

Andrew