I started a portal that will post guides on how to buy Bitcoin with all kinds of payment options. The first guide that was published was "Buy Bitcoin with NETELLER"
You can find the guide here: http://bitcoinbuy.info/2015/10/how-to-guide-buy-bitcoin-with-neteller/
NETELLER doesn't allow to trade BTCs:
12.1 You agree to use your Account in accordance with the provisions of these Terms of Use and any other instruction we may reasonably give you regarding the use of the NETELLER Service. You agree and acknowledge that you are prohibited from: using the NETELLER Service for any Prohibited Transaction;
“Prohibited Transaction” means any of the following types of transactions: (i) any pyramid selling, ponzi schemes or similar multi-level marketing, or matrix programs or other “get rich quick” schemes or high yield investment programs; (ii) the sale or supply of any illegal items or items which encourage or facilitate illegal activities; (iii) the sale or supply of counterfeit products; (iv) third party processing or payment aggregation products or services; (v) using NETELLER to facilitate the trade, exchange, purchase or sale of Bitcoins, or any other virtual currency. We reserve the right, in our sole discretion, to add categories of prohibited transactions by adding such categories either to these Terms of Use or an acceptable use policy published on the Website;
How do people trade BTC with NETELLER?
I guess that people get away with it, just like with PayPal. Same thing is written in PayPal ToS as well. Most of the time Neteller people don't even know that customers are using their services to purchase virtual currencies. They find out mostly when there is a dispute or a scam going on. In this case it will happen very often that customer service will close your PayPal/Neteller account if you admit that you have willingly traded cryptos.