Maybe you're already working on this, but how about when I send a photo from a location, you put that photo in my flickr stream in a set of my choosing with the proper location tags/metadata and other tags I may want to add.
I know I could just cc flickr on a picture email from my phone, but it would be cool to get the photo and useful location info to both places (bkite and flickr) in one step.
Perhaps you could also add some machine tags a la Upcoming.org so the flickr photo links back to my bkite post?
This is a great service. There are just a couple more things I want to see.
I was going to say better twitter integration, but I just figured out how to do it. So not that. I want to see more ways to find friends, like gmail contacts, facebook friends, myspace, etc. Perhaps an API (if you haven't made one yet that I missed) so that it can be integrated with websites and programs. Perhaps even more in-depth integration with social networking sites than I mentioned.
And more invites. More invites = good. Assuming, of course, your servers can handle it. Don't want the same thing happen here that happened to twitter ^_^
I am wondering if the interaction with multiple twitter integrated services is using up all of the allowed connections. The Twhirl blog explains more about this issue: http://blog.twhirl.org/2008/04/10/lim...
The loki.com toolbar could be quite useful - it works with the same Wi-Fi location data as the iPhone does and the integration via JavaScript is a breeze.
Have you thought about integration with Twittermap? This is hardly a high priority, but the implementation is likely dirt simple. Looking at their API, it appears that a single HTTP call is all it would take, provided you have the location data already available in a format they can parse.