Type is powerful and important graphic design element. Combined with artistic adjustment of type/font, balance, color and rhythm, you may design very entertaining and unique final composition. In the samples below you can notice that for each composition the designers had used no more than two different font families. From that point of view “less is more”, but the designers should also solve a problem with the effect of negative space and the focal point of the concept. Don't be afraitd to use repetition of type elements to achieve a clear and balanced work.
Samples from www.deviantart.com