I'm in the process of finishing the second shawl for the Afghans for Afghanistan shawl project. The trick with finishing this one is that I didn't leave enough yardage to turn a hem.
Good thing I took Joan Sheridan-Hoover's finishing class at the Michigan Fiber Festival in 2007! This is a neat combination of an overhand knot, with the tail woven back into the main fabric. The edge is more stiff than the rest of the fabric (due to the extra yarn being woven in there!), but it makes a nice finished edge for these fringe-less shawls!
Here's a close-up view of the finished bobbles on the edge. I have been alternating sides as I weave the tails in so the bobbles (technically the overhand knots) lean to both sides.