Info to stay in London

Are you interested in a good site for knowing about how to get by in London, finding a flat, buying a second hand bicycle?
http://www.gumtree.com/london

Looking for work there?
http://www.gumtree.com/bar-jobs/london

Work for the post office
http://www.gumtree.com/p/general-jobs/royal-mail-christmas-seasonal-staff-peterborough-gtrmctc-/1080536881

And many more...browse the site
Paul