Karen's Prayer Beads page. Karen Deal Robinson has had this page up quite a while and has really done her homework. Great site for resource links. She also has a page with suggestions about suggested ways of praying that have worked for her.
Meaning of 108 beads on a mala - a short description not so much focused on prayer beads but the number 108 and some of its implications.
Prayer Beads in general at Associated Content
Prayer Beads at Wikipedia - the obligatory Wikipedia reference.
How to pray the Catholic rosary sequence
Orthodox tradition on prayer ropes. This article has a lot of information on the invention of its use by St. Pachomius to aid monks with their praying. Includes a mention of the numbers 12 (number of Apostles), 39 (weeks of Mary's pregnancy with Jesus), 33 (years of Christ's life), and 17 (the number of prophets).
The Jesus Prayer
Orthodox Tradition at St. Vladimir's
Catholic information - at about.com
lectio divina at The Order of St. Benedict website