It looks lime somebody took the time and registered a domain just to answer your questions.
http://bitcoinfees.comThis is answering a lot of questions but not the OP's.
OP, here's your answer: Minimal output that is accepted is 5460 satoshis. (to prevent network spam)
This might change at some point in the future.
Google "5460 satoshis" for more info.
It is indeed 5430 sat.
This feature / limit is introduced in bitcoin-qt 0.8.2
FYI:
https://github.com/bitcoin/bitcoin/pull/2577First, to discourage people from bloating users' wallets and the UTXO set with tiny outputs.
This pull defines 'uneconomic dust' as 54.3 uBTC (5430 satoshis, about $0.007 at current prices), and treats any transaction with outputs less than 5430 satoshis as non-standard (won't be relayed, won't be mined). 5430 satoshis is derived from the cost (in fees) to spend a TxOut/TxIn. See
https://people.xiph.org/~greg/txouts2.png for proportion of recent outputs this will (eventually) affect.