To conveniently search all of their stackexchange sites using Google including stackoverflow.com, try the search box on http://stackexchange.com/.
This somewhat helps with a problem they are facing which is fragmentation of questions and answers across their sites. For example, for Ubuntu you might need to search three or four of their sites before finding an answer to an issue you are having.
This somewhat helps with a problem they are facing which is fragmentation of questions and answers across their sites. For example, for Ubuntu you might need to search three or four of their sites before finding an answer to an issue you are having.