For years I have used Haloscan for comment collection and, when necessary, weeding.
Due to a change at Haloscan now Echo), I have given the option to move out or start paying for what had been a valuable, albeit free service. While the fee is not that high, you might note that I charge not one red cent for reading my blog (Thanks, Blogger!) though there are fees associated with the domain name, etc. I am movin out of Haloscan.
In any event, I have exported all the older comments from Haloscan and hope to figure out how to put them back where they belong soon.
In the meantime, keep commenting and I save those, too.
UPDATE: Or, maybe I'll convert to Echo. Any suggestions?