a-z index accordions annotation auto-completion bar charts blogging breadcrumbs bug reporting calendars captcha carousels charts clipping cms command line interfaces comments contact content delivery module content management systems creating folders crowdsourcing date selector details on demand dialogs drag to select drop-down & fly-out menus edit in place email embedding expand-collapse transitions faceted navigation favorites feedback file management filtering fish eye lens floating layers forms form validation gestures global navigation glossary guided tour help home page horizontal tabs hot topics navigation hover invitation hybrid information design inline forms labels language selection lightbox localization local navigation login menus micro blogging natural language commands navigation news news sites page-width drop-down menus pannable user interface (pui) preferences presence information promo. modules ratings real estate registration rich text editor search seo single serving site sliders slide transitions sms spark lines tables tabs tagging tags time slice selection top stories tree navigation typography as interface uploading files url shortening vertical tabs video video editor video players visualization volume control vote to promote voting wikis wizards zoomable user interface (zui)