For me, Instagram is the ultimate travel log. You can capture images with your smart phone, apply effects, write captions, and share with others -- all in real time over a cellular network. During my visit to Germany, I've used Instagram to augment my Photokina reporting for Lowepro and to document my own observations. This is the first time I've tried this (in fact I've only been using Instagram for a few weeks), and I'm having a blast.
You can set up the application to share your posts on other social networks too. So I'm able to keep my Twitter and Facebook friends up to date, even if they don't follow me on Instagram.
What's even more interesting to me, is that I'm using an iPhone 3GS for this reporting, not my iPhone 4S. As you may recall from a podcast earlier this month, I had AT&T unlock my iPhone 3GS, then I bought a SIM card in Germany for 25 Euros with 750 MBs of data plus plenty of talk time. This allows me to post lots of content regardless of my location.
Tonight, we head to Oktoberfest. I will certainly be reporting from there. If you use Instagram, you might want to follow me at derrickstory. Otherwise, I'll be sure to post on Twitter and on TheDigitalStory on Facebook. Prost!