Oh, one feature suggestion. Would you consider adding support for Gravatars?
It could be a feature that the site author can enable/disable from Welcomments admin panel. If the commenter typed their email and the email hash would match a user in Gravatar, their Gravatar image would show instead of the default name initials.
I feel it would create more community like feel in the comments section, when commentator would have a “face”. I guess it’s also something I’ve just so used to, coming from the WordPress world initially :)