Having recently acquired my very first honest-to-goodness real "smartphone", I immediately installed Instagram on it to play around with, and it very quickly became my de facto camera phone posting method online.
Previously I've used all kinds of alternate image posting sites like Imageshack, Twitpic and Mobypicture for my day-to-day captures and Twitter related postings, but I gave into the Instagram craze and it's pretty much the only thing I use now when I'm taking camera phone pictures. And I love it. I love being able to use my camera phone to take my average day-to-day snapshots and not have to lug heavy camera bags around when I don't feel like it. It's addicting!!
The most important thing is to just keep taking pictures. Even if you don't have a super-duper-mega-awesome-camera with you, just make images. Use them as compositional tools and to keep your brain active and creative.
Check out all my Instagram goodness here or click on the Instagram widget on the left of this blog.