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I heard many times that programs/web applications should have search box positioned in upper-right corner of window/page. I wonder if this is really important?
For example users are now searching by entering keywords to address bar (Google Chrome) rather than to search field positioned on right-hand side of the browser.
I also see that some popular sites (e.g. github) have it's own dedicated search page. Even If you go to Yahoo or YouTube or Google results, search is on left-top instead of right-top.
So can search box be positioned in other places than upper-right corner to be effective? For example left side of page or separate search page?