Benedikt - I bought and loved Instadesk many months back (before I got the Nexus 7, which is now my primary Instagram browser). I really hope this doesn't hit you too hard and wish you the best for your other products :-)
That said, I really, really hope they don't allow people to post or register from the web. Spam is bad enough already.
Thanks! InstaDesk still has many features that their current web implementation doesn't have, so in the short term I expect the hit to be marginal, but in the long term it's good that I have other products lined up :)
You're right about the spam, but it always saddens me if somebody buys my app and can't use it due to the lack of an IG account (I'm stating this restriction right in the first sentence of the app description, but some people don't even read that).
That said, I really, really hope they don't allow people to post or register from the web. Spam is bad enough already.