If you want to read tweets from the streets of Iran, the Stimulist says these are the hashtags you want:

#iranelection

#gr88

The article's author also suggests:

Help
 cover
 Iranian 
bloggers. Change 
your 
Twitter
 settings 
so 
that
 your 
location 
is
 TEHRAN 
and 
your 
time 
zone 
is 
GMT
+3.30. 

Security 
forces 
are 
hunting 
for
 bloggers 
using 
location 
and 
timezone 
searches.
 
If 
we 
all 
become
 ‘Iranians,' 
it
 becomes impossible to find them.

Here's a link to the full article:  http://thestimulist.com/the-7-habits-of-highly-effective-protest-twitterers/

So, for now, my location is Tehran.  Hyper-localism can wait.