Quick comments at first glance:

re preview - very nice clean format! Not sure why dates appear to be in random order? Also Flag filter seems to bring up a mix of both countries. *(fixed please see)*

Note that we should perhaps start all content at Jan 19 (or later)- we can always go back and add past if we wish. Otherwise too many edits/cleanups on my part could be needed - such as correcting country) *(ok)*

Re add, 
(1) by exchange - we really need just by country - we really don't pay any attention if NYSE or NASDAQ - so USA, Can, All/Blank *(We need those exchange to distinguish symbols)*
(2) Color should be a menu choice, default black *(done)*
(3) all other choices should have defaults *(done)*
(4) I did a test entry - and was displayed OK (but of course not in date order!) *(will be in order now)*

Really need View/Edit/Delete so can correct slip-ups - such as Country (John doesn't always mention TSX in tweets) *(need some extra effort minimum 5 hours*)
 
Re hours, are you saying 
-Time estimate was given only for addition and displaying on front end - 10 hours? *(yes)*
-convert existing and for daily updates - 8-10 hours? *(did not understand)*

On the next round of comments, I will pull out & check against my original thoughts/specs. *(sure)*

Thanks