The wonder and mystery of Google has perplexed me again this week. While working on our sitemap I managed to get some more pages listed in our map, within an hour Google Bot had been by and starting to index pages quickly, very quickly (the server got a little bit upset and threw a few timeouts). The result was a jump of indexed pages, in fact it doubled over night to 10500. If that were the end of the story that would be great. It wasn’t and within a day the indexed pages dropped down to 4500, over a 1000 less than we started with. Two days later and every few hours we go up and down between 4500 and 5500. I presume it must be something to do with duplicated content, as our pages are search results of jobs there is a fair chance that some pages will contain similar results, so the next job is to work out how to get Google Bot to visit more unique pages.