G5; a Bend company that designs websites and specializes in other marketing solutions, today announced that it ranked No. 6 in the Portland Business Journal 2011 list of fastest-growing private companies in Oregon and southwestern Washington.   This marks the third consecutive year that G5 has been ranked in the publication’s listing of the fastest-growing 100 companies. G5 posted revenue growth of 228% and an employee count increase of 223%. That growth was seen during a three-year period from 2008 to 2010.