In case you do not know yet, Google recently introduced Google Trends. What is Google Trends? it analyzes a portion of Google web searches to compute how many searches have been done for the terms you enter relative to the total number of searches done on Google over time.
You know that Oracle database version 8i is getting extinct and 9i is, slowly but surely, being replaced with 10g. But now, you can actually see how Google web searches reflect this trend, using Google Trends: