The Guardian reports: Telegraph.co.uk overtook guardian.co.uk in April to become the most popular UK national newspaper site, according to the latest Audit Bureau of Circulations Electronic figures issued today. The Telegraph Media Group website, which carries articles from the Daily Telegraph and Sunday Telegraph as well as original output, saw its unique user numbers rise 9.45% from March to 18,646,112 for April. This was an increase of 153% year on year compared with April 2007. Well,