Recently active topics in Brightkite tagged with spam

I love Brightkite's ability to cross-post to Twitter. It allows me to start using Brightkite with little or no additional effort even though other people I know aren't using it yet. I do have one concern though. The current controls for what gets propagated from Brightkite to Twitter don't quite mirror my own preferences. If I sent as much as I'd like to Brightkite, I'd end up spamming my Twitter friends.

I have two ideas for dealing with the problem. First is per-type throttling-- no more than N messages of a given type for each M minutes (or hours). Or just restrict N to 1. That is, my first photo (or whatever) will be Twittered, but then no more for some number of hours.

The second approach would be to have some syntax for exceptions in crossposting. Eg, normally I want my photos crossposted to Twitter, but not this one I am sending right now. Normally I don't want my checkins crossposted, but I'll make an exception for my current location.

Make sense?