Your plugin provides useful functionality, but the accessibility of the checkbox added beneath the comments form is not good. The current HTML of the checkbox is of the form:
(input style='width:30px' type='checkbox' name='subscribe-reloaded' id='subscribe-reloaded' value='yes' /) Notify me of followup comments via e-mail.
Note that I have changed the < and > chars to brackets ( and ).
If you gave the checkbox a properly linked label this functionality would be available to (typically blind) screen reader users. Also, the label would become an enlarged click zone for the checkbox - something that would help some with motor impairments.
All you need to do is to change the code to read:
(input style='width:30px' type='checkbox' name='subscribe-reloaded' id='subscribe-reloaded' value='yes' /) (label for='subscribe-reloaded')Notify me of followup comments via e-mail.(/label)
This one small change will significantly improve accessibility.
If you have any questions about this or other accessibility issues please get in touch.