Wow, I had no idea. I've gone to the twitter website (on my phone, especially) several times in the past to try and look up "local, now" things -- e.g. I hear

Wow, I had no idea. I've gone to the twitter website (on my phone, especially) several times in the past to try and look up "local, now" things -- e.g. I hear a big bang/explosion, or there are fire/police in force nearby, or I thought there was a tremor, or there's a big storm. And every time, I've sighed and been disappointed that (as I thought) I couldn't search tweets without being logged in, and I rarely ever log in to any services on my phone. And so then I clicked away, opened up facebook/NYT/boston.com/etc. instead.