This is a Niche Site.....
for me the best...!
So my input
I see problem in compression php
you can try something in .htaccess (
depending you host)
PHP Code:
AddType application/x-httpd-php5 .php
AddType application/x-httpd-php5 .html .htm
AddType application/x-httpd-php5 .js
or if you have access to php.ini
PHP Code:
zlib.output_compression = 1
zlib.output_compression_level =""1 to 9"" ------>9 is max compression
the next i see
This page makes 32 parallelizable requests to
www.metaldetectorclassifieds.com. Increase download parallelization by distributing these requests across multiple hostnames
all your graphic on the same host....!
but is not necessairy to have CDN Try to have sub -domain like
http://graphic.metaldetectorclassifieds.com
http://graphic2.metaldetectorclassifieds.com
and parallelize all your graphics on it
you can i have more (but I think max is 4 or 5 depending how many ADS like google you have)
Opinion.... you have
Good LUCK...!