Whilst I agree there are a few automated card readings out there that are a bit naff, I have personally found a couple to be quite nice and useful. I think Tarot and other card readings, especially those done online in this way, depend very much on what you take from the cards, your own interpretation.
Two I like are:
http://spiritualguidancetarot.com/chooseacard.html
and
https://www.free-tarot-reading.net/free