I examined this site load performance using tools like 100pulse.com that demonstrate this site required unusual time for you to load due to improper image optimisation. Can anybody suggest good image optimisation method to improve this site response time?

You could utilize this Smushit to optimize your images, they drop lower their size without harmful the standard.

http://developer.yahoo.com/yslow/smushit/

They provide you with an extended explanation about why it's awesome, it truly assisted me while focusing on some mobile games and expensive applications.