There are two revenue markers most businesses keep track of. How revenue compares to a year ago and how it compares to the previous month. In January, 2008 my adsense revenue was $60 more than it was in January 2007. That means the glass is half full... Unfortunately, January, 2008 only garnered half the adsense revenue than I did in December, 2007. This means the glass is half empty... I tend to look at the annual comparisons as being more important, but I look frorward to months, when both revenue markers are exceeded. By the way, can any compute what my adsense revenue was for January, 2008 and December, 2007? I am not sure if I have given you enough information or not, but perhaps one of you math wizards can figure it out...
For me January 2008 was about $600 more than January 07 but January 2008 was ~$2000 less than December 2007.. and December 2008 was about $4,000 more than December 2006, which was roughly double May 2006.. So knowing all of that can you figure out what is the Airspeed Velocity of an Unladen Swallow?