hello I have a website with page rank 4 I've noticed when update pages it update right away but when I update with a new post it goes live couple of hours if you aearch for it on Google with the key words you used so that means if you use your site to post useful information or news google is going to pick it up quick I also use Google Plus remember that is 100% google no middle man i have also noticed when i use g+ I get more  hits so meaning I'll stick with google+ to post different information than facebook.

this is article I published that you can check out.

http://liberiacostaricaairporttransfers.com/volaris-dominates-low-cost-air-market/