wp-Hyphenate Plugin
wp-?Hyphenate adds tremendous ability to customize the application of hyphenation and adds features aid browsers to properly wrap long urls and keep widows company (a widow is the last word of a block of text that stands alone on the last line).
It’s still in beta, and if you want to test things out there’s a web form to do that.

Thanks for mentioning my wp-Hyphenate plugin. I am very interested in hearing feedback, as I’d like to remove the beta tag as soon as possible.