Enabling a HTTP Keep-Alive connection allows having a constant link with the server, instead of restarting the connection every time a page needs to be downloaded. It's useful to reduce the download time of any website, which is well seen by Google. This is the code needed for enabling Keep-Alive in your .htaccess file:
<ifModule mod_headers.c>
Header set Connection keep-alive
</ifModule>
Thanks for this, didn't know you could enable keepalive through the .htaccess. You can also enable it through the server config file (as explained here: http://www.giftofspeed.com/enable-keep-alive/ ) but enabling it through the .htaccess file is definitely much easier. Cheers, Will
Glad to help.