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That's pretty cool, does not help my bottom line any but I plan to test it against my own system for timer reasons and cost of Cell Data for example:

Extremely useful tool to monitor sites, but be aware that it will eat a LOT of traffic (This is unavoidable of course). For example, monitoring kickstarter consume 386kb per check, doing that every 5 minutes consume 3,3GB of data in a month.

My SMS service consumes NONE of your data, does not effect your phone performance and checks once every 70 seconds.

WARNING:

Don't do what libertyranger is shilling. You can simply subscribe to https://twitter.com/Haejin_Crypto and where it says following there are three vertical dots, click that, and and turn on mobile notifications.