Using your device to Serve Christ!

We've all looked down our noses at those buzzing, ringing and sometimes singing Sunday service cell phone offenders. Most rules of cell phone etiquette suggest we silence our devices or leave them at home.
But is it really so bad to use your cell phone or electronic device during service?
I can see it being rude to interrupt the sermon with annoying rings or vibrations. Also, checking scores and Facebook statuses are without a doubt uncool. But I think there is a place for my phonw in service.
Some examples:

1. Awesome Apps — No, I'm not playing bubbleburst during service, but with so many helpful apps on my smart phone, I find it indispensable during service. First of all, there's my Bible App. It allows me to follow along quickly. I'm not super Bible-literate, so it helps me track down passages quickly instead of flipping through pages, I can bookmark my favorite passages and even share them with my friends via text or Facebook. I love it, and it helps me continue studying Sunday's message all week long. I may not carry a Bible everywhere I go, but my phone is with me 24-7, so I have no excuse not to explore the Word with my bible on my device.
2. Notes — Ok, so this is basically anther app, but taking notes, making list and other reminders helps me to practically use the word after service. This week my pastor gave us 12 steps to forgiveness, I immediately made a checklist in my phone, something I have referred to twice already (It's Monday)
3. Status — I know, I said checking your status wasn't cool, but that's totally different from updating it! Sharing a weekly message with friends and family is an excellent practice of evangelism. We may not all be called to preach, but all Christians should freely speak the lessons we're learning on this journey. Hey, did you think twice about posting that latest viral video?

These are ways I feel comfortable pairing my faith with my attention deficit issues and addiction to technology. How do you use your device to serve Christ?