Due to many people asking for this feature it would be added to the Top-Rated Widget settings on the next version.
Andrew, we’ve just released the new version (1.7.4) with the feature to control the max length of the posts titles in the Top-Rated Widget. Please upgrade and let me know if that worked for you.
http://downloads.wordpress.org/plugin/rating-widget.1.7.4.zip
Thanks for this – I figured out how to modify the code to increase the trim – but the updated code is even better 🙂
Thanks,
Ande