Cron is a job scheduler in Linux/Unix. It's often used to call a URL periodically, e.g daily, at 1:00 AM. Cron job is very useful to backup files, databases, send mails, clear temporary files, generate invoices, set up WP-o-Matic, Drupal, Joomla, PHP cron jobs, etc. SetCronJob is now offering two kinds of account: * Free Account: You can create unlimited cron every 5 minutes. * Premium Account: You can create unlimited cron every 1 minute with all features! Starting price is only $5. Check it out, and give me some comments
Yes, it's true with most paid hosting. But free hosting doesn't offer cron jobs feature. Some hosting providers won't allow users to create so many cron jobs running frequently. If you have a lot of hosting, you can't go to each host and set up cron jobs. And most ppl get trouble with setting up cron jobs using command line, and some script may not work properly if you don't know how to configure it. So, you'd better use an external online cron jobs and manage all of your cron in one place.