Lately I have been trying to concentrate on getting offline sales selling my services to local biz and all that jazz and neglected some of my niches which promote clickbank books.
After reading a thread here by Jeremy Kelsall, I went ahead and created a new clickbank id for two of my niche sites.
Boom..had 3 straight days of sales. No new articles, no new promotion..no new nothing. This change in affiliate id was the only change I made.