Clicking on a link to a page on a different website - Here the author might be explaining about the ad's in form of pop-up or video, this might cause the visitor to quit or they may click & continue with the external link.
Example:
http://timesofindia.indiatimes.comYes, we can reduce this if the external links are opening in a new window.
Session Timeout - Yes we can alter this by using _setSessionCookieTimeout() but if I am correct this is just one of the factors which affect bounce rate. we can alter the values and by altering we get wrong data in analytics & I hope we don't need wrong data in analytics.
Visit to your subdomain will count as the visitor leaving the website and thus it will be considered as bounce rate visit - If we do proper CDT I hope we can correct this issue.
Yes Sir,to some extent we can alter bounce rate!