Simple, beautiful and minimal typography is always refreshing to the eyes. We are bombarded with busy visual material and branding everyday. Seeing graphic design that is not over worked reminds me to do less and make it count.
It's always a huge turn off when some body turns up with tacky self promotional material - in my opinion it can completely change a clients perception of you and your business. I'm currently on the hunt for a few card designs that are perfect for photographers, it's always nice to have something that makes you stand out from the crowd - and for the right reasons.