I was just checking the HaloScan blog and noticed this:
And the biggest change—email notification of new comments is now 100% free! So be sure to go and activate the free email notification if you haven’t already done so.
I’ve always had a click in my toolbar that took me to HaloScan so I could check to see if there were new comments. Sometimes people comment on posts that are way off the current screen and I’d miss those comments otherwise. I may still keep doing that. Getting e-mail every time someone leaves a comment may get old after a while. But, hey! I have the option.