When i check the Cache age for some sites, it's just a day back while for some sites, it's almost 2 weeks or more.
Both sites are almost similar,
--> Registered on same date
--> Have the same no of articles
--> Ranking on first page
--> Same backlinking campaign
How do you increase the Cache age of a site OR how do you make Google to crawl/cache WP BLOG frequently?
Somewhere i read that sharing via social networks & google +1's makes it update the index/cache/crawl site?
Help is appreciated.