Shortened link
The link you followed has been shortened with is.gd. Shortened links can go anywhere on the Internet so you shouldn't continue if you got the link from a suspicious source e.g. junk email.
The full original link is shown below. Click the link if you'd like to proceed to the destination shown: -
http://apps.facebook.com/inthemafia/track.php?uid=0&zy_track=request&code=&value=%7B%22from%22%3A%22p|82999894%22%2C%22value%22%3A%22appinvite_giftinterstitial_page%22%7D&sendkey=ad8b1e7528364b5f0b52db68df15b8be$$ccF(NUT,17nEP_XULNW8T_c!0YDKgAVJZ1rg_6YEcDA*g4pHTd,8ETupoMXF*rUroy.FBpyHU1-&ztrack_category=free_gift&ztrack_subcategory=2601_Marble Slab&ztrack_creative=free_gift&next_controller=freegifts&next_action=accept_gift&next_params=%7B%22from_user%22%3A%22p|82999894%22%2C%22from_user_ppid%22%3A%22p|82999894%22%2C%22time_id%22%3A%221291924744%22%2C%22loop%22%3A%22ea87ffd692a920369bf230b06400ba8b%22%2C%22item_cat%22%3A%221%22%2C%22item_id%22%3A%222601%22%2C%22gkey%22%3A%22b863fe59b4b37fb60af3b0c204317487%22%2C%22giftback_key%22%3A%223c09f3292a351f333af4521747fe5a70%22%2C%22mult%22%3A%221%22%2C%22exclude_type%22%3A%222%22%7D
