I am in the process of setting up a porcupine 411 number for the bay area. This may be something that we can use.
If you are not familiar with this service check out this link
basically it is a number you can call, and record a message, that will be immediately posted online and can be disseminated via rss feeds etc...
This way, if you have a LEO encounter you can record it, and it will immediately be online, and sent to those who subscribe.
This is cool because, if you dont have a voice recorder with you, you can just make a speed dial to this number, and you are broadcasting.
Actually, with free long distance on most cell plans, you can use it from where ever. I will get the number set up on a bay area area code.