I suggest not using virwox to buy btc with paypal, they are very expensive and you will lose about 12% of your funds on commisions.
I agree. However for many people in the world there is no viable alternative than to use Paypal via sites like Virwox. I live in Japan and international money transfers to an account that is not in your name (such as if I send money to an exchange in another country) are very difficult, expensive, and time consuming due to anti-money laundering laws. Therefore I used Virwox as it is quick and convenient. As an alternative many months back I tried opening an account at Mt Gox here in Japan. Fortunately for me after waiting a couple of months for my verification document to be accepted and opened and still waiting I gave up and went to Virwox.
So, if you have a viable alternative to Virwox you should use it as it'll be cheaper than all the conversion costs. However if not, it is a viable and reliable means of obtaining bitcoin in countries where it is difficult to do so. Selling bitcoins is also problematic for me.