Both apps accentuate mobile blogging and connecting to people. I’ve been using the iPhone to take pics on the go, dropping them in to Flickr on the fly via Flickr’s email service (iFlickr on jailbroken iPhones is fantastic too), and then Twittering the links.
Which leads to tying together Twitter and Flickr. Twitxr ties Twitter and Facebook together, but isn’t really that impressive since it only runs on hacked iPhones and hits those two services. I’d really love to find an app and/or service that hooks Twitter and Flickr together. Both have APIs. This seems natural, no?