I exported my feeds from the WizzRSS extension in Firefox.
Imported them into Google Reader with no problems.  Even made my folders to seperate the feeds I had setup in WizzRSS.
Not sure yet if I like it as much as WizzRSS.
Both are centralized, but with Wizz, I need firefox.  With google, I can read them on any browser. Very cool.
Time will tell if it evolves into a worthy reader.