Feisty young social news site Netscape.com, raised from the ashes of the old Netscape portal about 10 weeks ago, gained its 50,000th member today. (Disclosure: Download Squad and Netscape.com are both AOL properties, and I'm one of Netscape's Navigators.) The 50,000th member goes by the name of zvyozd, which frankly sounds like an alias to me. Though some people would argue that arbitrary milestones like this are meaningless, I do love seeing all those zeros lined up. My back-of-the-envelope calculations say that equates to about 5,000 new members per week (duh), and more than 700 per day. Congrats C.K., Jason, zvyozd, and all of the hard-working Netscape developers, anchors, navigators, and members. In case you're into such things, you can watch the new members, stories, votes, and comments roll in on the Netscape Tracker.