Pearltrees is a site I just found out about from The Educational Technology Guy. This is a wonderful site for curating the web in a collection pearls. These pearls can then be customized and arranged in different patterns. Also, a person can invite others to collaborate on a pearltree and share it w/ others.
I highly recommend checking out Pearltrees by clicking here!!
For my top 10 sites for curating the web click here.