came across the (new?) browser just days ago. being fed up with firefox n IE recent nonstop "not responding" (hang) status, i set out in search of new browser to test upon. the first feature i noticed was its integrated facebook toolbar on the browser's status bar (see screen captured below), definitely the most friendly feature towards facebook addicts .. i mean, users.
flock is said to be an "enhanced version of firefox". have you tried it out? or notice any pros n cons of this particular browser?