Personal Location Tracker

Personal Location Tracker is a simple location tracker.

Maybe you're backpacking, and want to give your friends and family a way to know where you are?
Maybe you're travelling somewhere where you're worried for your safety, and want to make it easier for someone to find you if something bad happens.
Maybe you're walking in an area of a city you don't feel comfortable in
Perhaps you want to record your running/cycling?
Or maybe you're just travelling to some friends, and you want to give them a way to see when you'll arrive.

Personal Location Tracker runs in the background, and updates your own private website address with your location, which you can share with your friends or family.
Personal Location Tracker has a send SMS function to easily share your private location website address with your contacts.
It minimises the data usage as much as it can.
You can choose how often the updates are sent.
If you want to save your battery, you might like to choose a value like 1800 seconds (30 minutes) per update.
However, if you want it as often as possible, you can choose 1 second per update.

The permissions used:
GPS - this is obvious.
INTERNET - this is so it can update the server with your location if you want.
SMS and CONTACTS - this is to allow you to send an SMS to your contacts.

Please let me know if there are any bugs, or suggestions on how to make it better.
Please note though: this is just a small project in my spare time - I hope it is useful to you, and I will try to make it better over time, but please don't get mad if I don't have enough time to.