It wasn't invisible, but it was cut short with no advance notice to prevent further dilution of existing investment. A week later, they started selling NXT at a 4762% markup (yes, that's over 47X original purchase price).
NXT is number 2 on the scamcoin poll,
https://bitcointalk.org/index.php?topic=361286.0 .
That poll is pretty ridiculous. Have you downloaded some of these alt-coin wallets and noticed that they all look the same? They are all copies of BTC. The alt-coins exist to give GPU miners something to kick around.
I made an investment in NXT because it was new code and was written to be highly extensible. Certainly, the NXT pre-launch was completely screwed up, and the Jan. 3 launch was overshadowed by DDoS attacks and a hack on DGEX. Turning 21 BTCs into 38000 BTCs in 6 weeks is bound to upset a few people. It's not mineable so it alienates many in this community anyway. But, the uniqueness and the feature set of NXT justify the market cap.
Here's a pro tip. Use your GPU hardware to mine a profitable Scrypt coin while you can, sell the coin, and buy the PoS coins, e.g. PPC, NXT, YAC, DEM, and future PoS coins. Private ASIC developers, driven by greed, will come to control all PoW coins, even Ether, and will ultimately destroy their utility.
I favor PoS next gen coins as well, like DAC concept. I'd rather Ethereum was pure PoS, but really like the rest of the project.
I liked the NXT a lot and it was on my hotlist since it had code in beta, even though the docs were sketchy and with the cloak and dagger drama going on. My big beef is how the pre-sale was handled (having the door slammed my face-hard to be objective), and their continued refusal to acknowledge the real reason for ending the sale without advance notice. Regardless of how good the tech is, the character of the NXT founders is questionable.