[Plugin: WP-Polls] add user agent information

I very often ask my visitors if a specific feature is working on their system. Unfortunatelly, I can’t ask an open question like the browser they are using. So I would like to extend the plugin to save the user agent as well. Is this a feature anyone, especially the plugin author, would appreciate? Maybe he can include it or I will send him the changes, but I don’t want to make changes that get obsolete with the next update.

http://wordpress.org/extend/plugins/wp-polls/