Don't worry blockchain.info will not steal your bitcoins. The problem goes to poloniex, contact their support and probably they are still not sending it to you.
Don't worry, nothing has happened to your coins. There's no way your coins could be stolen by blockchain.info anyway. Using the same blockchain explorer, the transaction seems to be on record here:
https://blockchain.info/tx/2f794c8e6f0c7722e34545abae3956f0a07dfec1d2c420365ba5c83496700b75Where the address 1Nj5DgQcRURVhJV6Rcnz4M7mRJzQgCz9MD has received the amount you specify. Confirmed 10 hours ago with 73 confirmations, so nothing for you to worry about.
This problem seems to be common enough for blockchain.info explorer, I've seen it a few times. Can't say exactly what it is except they must have a problem with node(s?) that isn't giving them updated information on the blockchain. The only thing to do now is wait patiently for them to fix it.
Nice finds, take buwaytress' suggestion that you just need to wait for awhile. Since it is already on the explorer and for sure that's your transaction and if it's not the fault of poloniex then it's because of blockchain.info. Later on, it will be credited to you anyway.