Tasting notes: Why to take them.
Anyone who's serious about the intelligent enjoyment of wine would do well to get in the habit of routinely jotting down tasting notes (TNs) and, ideally, keeping a log book, for his or her own education and enjoyment.
I think the simple process of note-taking helps you focus on the wine, remember it better, and develop your "palate memory."
And once you've done that, I also think it's great to share the results with a group like the Wine Lovers' Discussion Group.
Sharing your comments on wines benefits the online wine-loving community in general by providing vicarious enjoyment and buying advice; and also, frankly, putting your notes online in a friendly environment gets you feedback through comparing notes and getting reality checks from fellow wine lovers.