I tried this software today. It does not look too easy to use overall.
Pros: light software, does not take much resources. easy installation.
Cons: forces you to use IE which is bad. I love my Firefox! IE has some security issues and I don't want to use it for eBay. Even if it forces to use IE then I can not use its features anyway -- no tabs, for example. Proxy settings does not work really - I have to setup the same proxy in 2 places to match (software and control panel). Error messages make no sense, you have to figure out yourself what's really wrong. Sniping window is a little confusing from the first time of use.