What's so different from Metacritic sans technology products (which you could gauge through a more specialized website)? What do you guys offer that would make a user want to switch over?
Secondly, Hypejar focuses only on products before they release whereas Metacritic does both pre and post release of products.
Hypejar also offers notification system for upcoming releases and features such as the Browse and the Calendar.
So to answer your question, it's not really to "switch over" users, but to rather offer something vastly different.