I have already sold over 650,000 NXT with a very simple system and am starting it back by selling in 100,000 increments.
To make a purchase, simply send bitcoin for the amount to the following address with a "public note" of your NXT address: 16bE9DcVfzYFigDcvQ8zR4xj43pSRShdou. This step is very easy to do from Blockchain.info -- please see https://blockchain.info/wallet/website-faq
I will send NXT to your address within 24 hours. To protect yourself, I recommend sending no more than 0.25 BTC at a time and waiting to receive your NXT before buying more.
I am cc5alive on bitcointalk.org. Feel free to PM me there if you want to verify my identity - https://bitcointalk.org/index.php?action=profile;u=19099
To see how much NXT is for sale, you can check the wallet balance at my BTC address. When the wallet balance reaches a certain amount which is listed on the spreadsheet, the sale will end until I release a new 100,000 NXT at a new sale price. You can check the wallet balance here - https://blockchain.info/address/16bE9DcVfzYFigDcvQ8zR4xj43pSRShdou
PLEASE INCLUDE PUBLIC NOTE WITH YOUR NXT ADDRESS ON THE TRANSACTION. If you do not, your order may be processed later or at a higher sale price.
To see the current amount of NXT for sale and the sale price, you can visit the link below:
https://docs.google.com/spreadsheet/ccc?key=0AvdOna5wsG2RdDZ4M2R6WHRHczVHVHdUWnRGOWo3NXc&usp=sharing
If there are any issues, please PM me on bitcointalk.org as I check that more regularly.
Cheers!