I have been using SEO for comments since last year and its a excellent plugin. It helped my blog's traffic grow substantially.
I could also see drop of traffic since last one month. Since last few days, I noticed that links on comments are not being generated. This may be one of the reason for traffic drop and search position downgrade.
Comments links can be checked on this page: http://www.pankajbatra.com/finance/fixed-income-plans-ppf-scss-corporate-fixed-deposit/#comments. See there is no link against commenter's names which was there earlier I believe.
Did anybody else have also encountered the same issue?
If developer of the plugin can read this post, please can you help out?