As my site becomes more popular the amount of comments has grown.
The old system was getting extremely difficult to manage, so I have switched over to Disqus to power the comments.
Disqus has some nice features:
You can log in with your Facebook/Google/Twitter id
You can reply to specific comments
You can vote comments up and down
All your existing comments on the site are still there but you will need to register with Disqus to put up new comments. Once you register, Disqus will recognise your email address and link all your previous comments to your new Disqus account. You can keep using your existing username.
Any issues let me know and I will pass it onto my techie folk.