I' ve made several deposits and withdrawals through Neteller, no problems. The interface is more comfortable to someone who is used to a trading platform rather than betting. I like the concept and the feel of the website. Supposedly, since Intrade only acts as an intermediary, your funds are segregated, we'll see.
The only real problem I see so far is it is difficult to play size without crushing the bid/offer or scaring away bids/offers. So, you really have to "work" your order little at a time, not showing your true size. It has taken me several hours to move in and out of positions when trying to move 1000+ contracts. So far, it's been fun to play with and I would recommend trying it out.