Mercury in Retrograde?

After all this, yesterday lunch I met an astrologer. She informed me that mercury was in retrograde and that we should be careful running errands. Things are likely to go wrong. HA! How little did she know. I was surfing around and found this description of it to be very appropriate.

http://www.writerinthewindow.com/mercury_retrograde.htm

So does it really affect us, or is it just coincidence? I found this horoscope for the same day that I found appropo..

Wed Dec 8: Fallen From Grace
Someone is in a finger-wagging mood and unfortunately they seem to be concentrating on you! Maybe they think you've fallen from grace for some reason, or perhaps you're simply the only person who happens to be around when they feel like letting off steam. Do your best not to fall into an equally critical and disgruntled mood, because it will soon make you feel wretched. Bright colours are silver and cherry pink. Lucky numbers are 39 and 58.

Thanks to www.astrology.com for the horoscope. May it not turn into a horrorscope.