I Think it's already been covered in this thread, but I'm with Scott. The Skrulls a big part of Avengers history, both past and present. The Skrull invasion of Earth a few years ago was mainly an Avengers storyline, with Yellowjacket turning out to be a Skrull, finding out Mockingbird (thought deceased) was really a Skrull, The Skrull invasion resulting in the death of the Wasp, Iron Man being fired as Security Director and head of SHEILD because of the Skrulls, the end of the Skrull invasion resulting in the formation of the Dark Avengers...they have been far more involved with the Avengers lately than with the FF. And yeah, the old Kree/Skrull war was a big chapter in Avengers history (and a great story available in trade if you haven't read it).