I think the potential for cool functionality here is massive, but so is the potential for location based spamming. Once you've tweeted from Leicester Square and had 50 local businesses follow you automatically and attempt to DM you you're going to get a bit fed up with it.

I hope that the cool stuff with businesses genuinely trying to engage with local consumers outweigh the inevitably spammy activity.

It's easy to imagine how this might be interesting at an event like a concert or even something more dramatic like an earthquake.

Oh, come now, do let's say a nuclear explosion! Wouldn't that be even more "interesting" than a mere earthquake? ;)

Kidding aside, I think it's kind of sad that the best they can say about this for an earthquake is that it would be "interesting." In a major earthquake, I'd like to think people were trying to help their family or neighbors instead of tweeting whose house has fallen down or what neighborhood is on fire...

I really like UberTwitter's feature of opting to include your location on a per-tweet basis.

I doubt I would turn my location on for ALL my tweets. I like my Twitter friends but I don't necessarily want them all knowing where I am ALL the time. :)

I like my Twitter friends but I don't necessarily want them all knowing where I am ALL the time.

I really don't want them knowing where I'm at period.

Oh wait a minute... I don't don't have any twitter friends...

Awesome!

Now I can find out the EXACT location of the uninteresting people who tweet all the inane details of their boring lives!

And you can out them when they lie:
Twit1: Hanging out at a high-end coffee shop, enjoying the sun with my peeps!
Twit2: No you're not- your location says you're at your mom's house.

Will the reverse work?
for example if I search by key words (in my biz line) for some reason among the results I got few twitts written in Cyrillic char.
Will we be able to define the region/State/Country from which we are looking for twitts (for me USA only)

Twitter: now making it easier for burglars know when your not home.

I like my Twitter friends

Who needs real friends? Am I right people?

At least wyweb is sane. I have nightmares about the whole world being mindless zombies, all twitting away and believing that people constantly want to know what they are doing every second of every day.

Twitter: now spin doctor friendly. Spit out a juicy bit of news embarrassing to some official and he/she WILL know where you are.

Soon everyone on earth will just be holed up, staring into machines as they twitter, thinking other people really care about the sad minutiae of their lives.

I hope they improve their adoption of Microformats before they launch the location-aware feature at Twitter.