2
Sure you can
First of all check your site with an online speed tester, google has a good one:
http://developers.google.com/speed/pagespeed/insights/
I did test your site (http://fla-ts.com) and there are some issues, some are a bit difficult to deal with but with compressing the many images on publisher pages you can improve loading of that pages.
I checked and it seems module caching is not enabled which is good, as their are some issues with caching after the cache is filled up after some time...