Easy And Free Cron Job For Facebook Bot

Cron-job is an sheduler for repeating tasks for an unique interval.
It's must for facebook bot sites for executing their php file for every
30 seconds or 1 minute.
The main cron-job providers are listed below..

* Setcronjob.com
* Crondash.com
* Cron-job.org
* Easycron.com

Setcronjob.com and Easycron.com are paid.
which means you must give them money for using their service.
It will be 99% up time. Never get off..
Crondash.com and Cron-job.org are free services.
But your cron will be disabled automatically on these free services.
You can also use cron job without any website.
Using Easy auto refresh extension, you can set cron-job for your url
for a unique time interval. (for google chrome users)
It's absolutely free of cost.
Click here for adding extension.
Add extension to chrome.
See the picture below.
Open a new tab and enter your url to be refreshed.
(Eg : www.sreeofficial.com/value.php)
Set interval for refresh.
Here i am setting 10 seconds as interval.
Now click on Start button.
Your url will be refreshed automatically.