Comparing Visits from Different Years

One of the reports from Google Analytics is an overview of visitors from any two dates that are of interest. You can also compare any two sets of date ranges. In this case the graphic to the left compares 1-1-08 to 7-22-08 vs. 1-1-09 to 7-22-09. The graph points [dots] are per week, but you can show data per day or per month. Click the image for a larger view of the data.

Notice that the graph lines appear almost identical. However the data indicates there has been a -0.56% increase visitors from this year to last, or around a decrease of 7000 visitors. That's less than one day worth of visitors, so maybe the site went down a few hours more this year than last.

Not much to worry about until I scroll down the report and review the data on a per page basis. That's when the data starts to look troubling. Here is a sampling of a few of the pages that are in decline, ignoring the few pages that showed an increase in visits.

CANbus -4.24% in visitors.
USB Interface -5.21% in visitors.
interfacebus.com [home page] -15.68% in visitors.
PCIexpress Interface -37.28% in visitors.
RS422 Interface -5.16% in visitors.
SerialATA Interface -7.19% in visitors.

Now these are not buses that are in decline, so there is no reason for these pages to see any decrease. Unlike the RS232 bus that is being left off newer computers; that page also showed a -12.25% decline, but I can deal with that.

So what is the deal with a graph that shows no real decrease, but many pages that seem to be in decline. Well when you check the blog listing new engineering pages, you'll see that over a hundred new pages have been added over the same time frame. So the new pages are leveling out this year even as a number of pages are seeing a reduced number of hits.

Hmm, I happen to be looking for the VME64x pin out today, my page came up first in a Google search but I decided to select the next guys page. Sure enough there's my text, plus a link back to me ~ stay off my site. Guess it's time to start looking at some of these other pages to see what's finding its way onto other websites.

Most of these guys running hardware or engineering sites aren't engineers at all, you can kind of tell by what they copy.

The point here is always spend some time searching the Internet looking for your work. I found a guy a few years back who had copied my PCIe page [and a dozen others], but I had just written the page. It had taken several hours to generate the different pin out tables in HTML, and he grabbed them in a matter of minutes.... Better stop now or I'll start naming names. Oh had two typo's I found weeks later, to bad he missed garbing the up-dates.