Just before google caffeine was implemented, the number of indexed pages on my site were decreasing dramatically. I was starting to get worried because my traffic were decreasing consistently with the number of removed webpages in google index. However I did nothing and decided to wait and see what happens.
In January 2010, I noticed a significant increase in the amount of indexed pages for my website. The results were surprisingly high – I had 50%+ more pages indexed than before google caffeine. The number is increasing day by day probably because i update my website everyday but i’ve found that google caffeine seems to be giving more attention to crawling and indexing which is always a good thing.
If you have noticed a decrease in the number of indexed pages on your website, then you need to look at the quality of the webpages of your site. My opinion on this is that if you have low quality webpages which is the result of an attempt to get updated content more frequently to entice GoogleBot, then maybe you need to change this. Nobody likes copied over content or little content with few keywords which are high paying. A webpage needs to serve its purpose and that purpose is to deliver on what it’s supposed to – for an article it needs to be rich in information, for a product, it needs to have a good description to clear off any doubts in the mind of the potential buyer.