Ok, something I can't figure out. Sometimes my sites/articles will get indexed in 10 minutes. Other times my sites/articles won't get indexed for a week. What's perplexing to me is I use the same pinging services, same social bookmark sites, digg, reddit for all my sites. In fact I have had articles indexed instantly without doing anything. Am I missing something or is that just the way google works? Without any rhythm or reason.