As for issues. I primarily use Jfusion for doing a Gallery 2 embedding. I don't use it much for it's primary function which is user sync'ing. It works fine on one of my sites for embedding. On another where it is more complicated it fails to work properly in frameless mode because it won't pass commands properly to from the Item/Article menu and therefore those functions fail. I have posted the issue on the forums, and tried to post a bug but couldn't get that portion to work. That being said Jfusion has some typical problems of freeware. Namely the Gallery 2 Jfusion developer disappeared off the face of the planet (or Jfusion anyways) and doesn't respond to support issues any longer. I believe Gallery 2 was one of the last items brought into the Jfusion fold and unfortunately the rest of the staff is less knowledgeable about this particular plugin. All responses from developers have been kind or helpful I just hope this particular bridge continues to be supported.