Recently active topics in Twitter tagged with keyword

Or is there a way to sort people found with keyword by last update time?

Is there a character we can use at the beginning of a tweet to escape command keywords like "on" (e.g., a backslash)? If I update with something like "On the roof", I end up following "the". Having to write "I'm on the roof" is definitely not ideal, especially if you have a long tweet that wouldn't fit the 140 character limit. It would be nice just to add a single character at the beginning like "\On the roof".

I want to run a feed on my website, www.charlotteareanews.com, that features a continuous streams of tweets that include the world "charlotte." I've got a badge running with my tweets at http://www.charlotteareanews.com/twit... but I want it to show Charlotte content, not my own. Please advise.

How long does it take for updates to be sent to my mobile phone after I've sent in a word to be tracked? I've already set up my mobile phone and sent in a word to track and nothing is updating on my phone when i can see updates for the same keyword happening on my Twitter page.