Couple of development in the social news sharing space:
—Digg has added some major elements of social networking to its site, designed to take the site beyond simply “digging” and “burying” headlines and blog entries. Members profiles will more closely resemble a social-networking site—more personal info, bigger photos, and a more extensive record of site activity, reports News.com. More interestingly, as a feature, users will also be able to use their friends lists as content filters so that their “social news” comes from a select group rather than the Digg community as a whole.
BW: Rose and Adelson hope the new social-networking capabilities will encourage users who only read articles on the site to become more engaged with the community. Currently, 15% to 20% of Digg’s audience are registered users. The vast majority of the 20-million-plus users, by Digg’s count, just read the posted stories.

—Then AOL’s (NYSE: TWX) re-branded social news site Propeller.com has launched, and not many changes form the old Netscape version of it. More details here. Our previous coverage is here.