Ever wondered how you could transfer any searches from ?s=TERM to /search/TERM , then read below or visit Alex King’s approach.
This is too good to not report on, so for personal archiving reasons, I have put Alex’ Code below:
To your .htaccess file add:
RewriteRule ^search/(.+)?$ /index.php?s=$1 [QSA,L]
In your theme, look out for search.php or similar and change the form field to:
<form action=";/index.php" method="get" onsubmit="location.href='/search/' + encodeURIComponent(this.s.value).replace(/%20/g, '+'); return false;">
This is it, you are done!