depends on what you need it for. i like having all of my contacts accessible on the internet, especially when i can just print out a list. i also switch phones fairly often, so all i have to do is download the application and re-download my sontacts to the new phone. as far as secure i couldn't tell you. don't give anyone your password and i would assume you are fine. for the average user, i doubt it's worth it.

It depends on how many numbers you have stored in your phone. It is really a convenient way to add numbers to your contacts since you can add them also to the website and this will sync with your phone automatically. The website is secure. It will save you the cost of having your contact list restored to an upgrade or a replacement phone if you phone is ever lost or stolen. This cost is $10 in the store. I use it and love it.

I use it and have several secure phone numbers stored. It works great. What are you gonna do if for some reason your phone drops into a blue room on an airplane or in the toilet or just dies? I have 450 phone numbers stored. If I'm 3000 miles from home and have to replace my phone, I can get all my numbers into my new phone in 5 minutes. Is is worth it? Ohhhhhh Yeaaaaaaaaaa.