It sounds like you’re running at least Disconnect and Ghostery at the same time. You can’t do these comparisons with multiple filtering extensions running at the same time and get apples-to-apples results because if one extension blocks a request, other extensions don’t see the request (the install order [browser dependent] determines which extension has first crack at blocking).
With just Disconnect running (OP), I get this list (similar to AjithAntony):
facebook.com, plus.google.com, reddit.com, www.google.com, apis.google.com, twitter.com, google-analytics.com, livefyre.com, facebook.net, scorecardresearch.com, moatads.com, linkedin.com, doubleclick.net, fonts.googleapis.com, googleusercontent.com, gstatic.com, googletagservices.com, quantserve.com, youtube.com, ytimg.com, googlesyndication.com, 2mdn.net, visualrevenue.com, imrworldwide.com, conviva.com, lphbs.com, googleadservices.com, accounts.google.com, typekit.net, ru4.com, clicktale.net, bkrtx.com, fyre.co, theplatform.com, stumbleupon.com, securestudies.com, network-auth.com