why should we (I ?) use /statuses/retweets/:id.json?count=0 (just to fetch amount of #RT), and not /statuses/show ?
The one has 180 request per timelapse, the other only has 15.
BTW, I wish /retweets would be lighter … but no, it doesn’t seems to be.
(don’t know if this is public or not, so I won’t give example here ;D)