[gsmlover4u]

google pagespeed/insights error
i am not understanding what to do
images are uploaded in image directory
http://www.example.com/images/buttons/collapse.png (expiration not specified)
http://www.example.com/images/buttons/collapse_40b.png (expiration not specified)
http://www.example.com/images/button...post-right.png (expiration not specified)
http://www.example.com/images/buttons/newbtn_middle.png (expiration not specified)
http://www.example.com/images/buttons/search.png (expiration not specified)
http://www.example.com/images/gradie...-grey-down.png (expiration not specified)
http://www.example.com/images/gradie...reytowhite.png (expiration not specified)
http://www.example.com/images/gradients/grey-up.png (expiration not specified)
http://www.example.com/images/gradie...-top-alpha.png (expiration not specified)
http://www.example.com/images/icons/icon1.png (expiration not specified)
http://www.example.com/images/icons/icon2.png (expiration not specified)
http://www.example.com/images/icons/icon4.png (expiration not specified)
http://www.example.com/images/icons/icon7.png (expiration not specified)
http://www.example.com/images/misc/arrow.png (expiration not specified)
http://www.example.com/images/misc/facebook_login.gif (expiration not specified)
http://www.example.com/images/misc/forum_stats.png (expiration not specified)
http://www.example.com/images/misc/legend.png (expiration not specified)
http://www.example.com/images/misc/navbit-home.png (expiration not specified)
http://www.example.com/images/misc/pak-gsm.gif (expiration not specified)
http://www.example.com/images/misc/rss_40b.png (expiration not specified)
http://www.example.com/images/social...s/facebook.png (expiration not specified)
http://www.example.com/images/social...googleplus.png (expiration not specified)
http://www.example.com/images/social...s/linkedin.png (expiration not specified)
http://www.example.com/images/social...ns/twitter.png (expiration not specified)
http://www.example.com/images/status...ategory-16.png (expiration not specified)
http://www.example.com/images/status...um_link-16.png (expiration not specified)
http://www.example.com/images/status...rum_new-16.png (expiration not specified)
http://www.example.com/images/status...rum_old-16.png (expiration not specified)
http://www.example.com/images/status...rum_old-48.png (expiration not specified)
http://www.example.com/images/statusicon/post_old.gif (expiration not specified)
http://www.example.com/images/status...rum_old-48.png (expiration not specified)
http://www.example.com/mobiquo/smartbanner/ads.js (expiration not specified)
http://www.example.com/mobiquo/smart.../appbanner.css (expiration not specified)
http://www.example.com/mobiquo/smartbanner/appbanner.js (expiration not specified)