Tip o’ the cap to clvrmnky for directing me to Cork’d: an online communal wine journal, complete with tagging and friends lists (“drinking buddies”).
Anyone who’s interested in discussing such things, my UID’s “mattinthehat”; go sign up & let us find out what each other is drinking. (Note that as of this writing, I haven’t got anything in there; that’s likely to change in the next day or so.)