Why Is My Site's Google PageRank Now 0?

It had been at PR5 for over a year, but since the last update it’s been at PR0 and my traffic has dropped by a factor of 10. Please help me figure this out. Thanks.

  [Orlando   web design       [URL="http://anjstudio.com/"]Texas   web design       [URL="http://anjstudio.com/services/view/search-engine-optimization"]   Search Engine Optimization ](http://anjstudio.com/)