Well, all in all this is really a fantastic extension but still, you need to be careful before you choose to use it depending on your needs. For example, if you want to have a bilingual site with Joomfish you will have to say goodbye to frontend editing option in K2. Furthermore, you can also forget about auto archiving because there is no such thing in K2. I was foolish enough to use K2 before checking all these things and now I'm stuck because I need all of the above : Joomfish, frontend editing and auto archiving. Also, there are no replies on the forum... now, make your own decision about K2.