To answer a couple of the questions above:
All the e-currencies have their advantages and disadvantages. LR has complete anonymity, irreversible payments, and is very easy to work with, but has absolutely NO customer service (so if you have a problem with your account, forget about getting an answer to your query). Also, anonymity goes both ways, so programs can take your money and run without any trail.
The better e-currencies, in my opinion, are the ones with some verification required (Strictpay, Alertpay). Although programs can still run with your money, at least with these there is a chance of getting some of it back.
As far as exchangers, that depends on what you want to exchange. For LR, SP, and STP, I use XChanger.org. For most others, and for purchasing e-currencies, I use goldexpay.com fairly often.