If you have opened multiple files, you can search and replace a text in all files by doing:
:argdo %s/search/replace/gec | update
This will replace all occurences of ‘search’ by ‘replace’, asking you for confirmation before doing each replacement. The e in /gec is used to supress error messages in case that the search string was not found in a file
(reference: (12/04/2013) James O’Beirne: Search and replace across many files in vim)
If you activate these fields by a click, then data will be transmitted to Facebook, Twitter or Google - possibly also to foreign countries and in certain circumstances the data is also saved.