3. YouTube - Top 10 UK Google searches in 2009
Google-owned 'YouTube' where anybody can post their videos for the world to see has taken the internet by storm. It has become an important service supporting businesses and news organisations. It can also be fun, with a choice of billions of new videos every week.
Facebook has been revealed as the most searched for term in the UK this year in Google's annual Zeitgeist list.
Facebook tops a list including fellow social networking site Bebo, online auction site eBay and, of course, Google.
What no Twitter? I hear you ask.
See the full top 10 in pictures.