I don’t think trading is quite satisfactory yet, as it is very early days / months of the Alternate currency take up. I’ve bought and sold a few on eBay, it cost in fees, any way you do it.
It is still early days and anything could happen, particularly that Feathercoin is well placed in network security to succeed and can still be mined by a newbie. Feathercoin is well covered by p2pool sites which are easy to attach to and help secure the network, your lower hash rate generates shares, and more regular payouts from the pool.
http://ftcp2p.nut2pool.com:19327
http://p2pool.org:9377
p2pool builds up shares in pooled internet wide payout, and is about 20% of the network. It is better to build up more credits by continuous mining. Although, you can switch between p2pool sites and your credits /shares are kept on all p2pools, so it doesn’t matter if one pool is down.