4. Hotmail - Top 10 UK Google searches in 2009
One of the earliest and best-known e-mail services is Microsoft's 'Hotmail'. It is used by hundreds of millions of people worldwide. The plethora of competitors have, it appears, failed to quash its searchability.
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.