Yes you are right, there are limitations in API, but these limitations are(5000 req/hour) far enough for normal users. Next feature will be the multi account support, and this feature will expand these limitations much more.
Regards,
Emre
It's not too hard :) As you know official API doesn't support sending medias. You can send unofficially by using instagram websites URLs but you need users passwords. Its not appropriate to do in terms of user security.
From the left sidebar, click + icon, "add column" window will slide right. From this window click third icon(under # icon), then click add nearby. P.S. You have to give permision for sharing your location with app, when the browser asks. Hope you enjoy :)
With instafall you can follow any user, hashtag or media flows in a specific location. In addition you can catch medias which are shared near by you in a circle of 1-5km.