For overviews I have been copying exactly what it states on the back of the box and indicating that I have done so, for example:
http://www.rfgeneration.c...l?ID=E-072-S-00130-A&I feel this way it offers both an
overview of the game whilst being true to what the original box said without filling it with opinion and bias as to whether you hate or love the game. (That can be covered in the review).
On a personal level I like to see the differences between the PAL box text and the NTSC box text as they sometimes can vary quite dramatically.
The thing with taking information and work from other sites take in both copyright issues and ethical values, as I know I wouldn't want someone copying my work for their own gain, when I'd spent hours doing it.
I don't really know the answer about the Easter Eggs though and I would leave it up to Tynstar to tell you the best way of doing that.