What is your Bounce Rate?

[GTX2]

Hi all !

I've red all comments above and would like your help.
I've bet on google since 2001 and took about 4 years to get all my content indexed and daily updated (using vbseo and sitemaps mostly).

I've got about 100k unique visitors per month, mostly from google (85%).
This if course means a high bounce rate (about 60%).

What would reduce most this bounce rate in my case?
I've moved similarthreads into the top of showthread to check results.
What more should i do to avoid this?

Thanks