Archive for November, 2009

18
Nov

Increase in virus activity

   Posted by: Richard    in Tech stuff

Having tried several anti-virus packages over the years, I have settled with Avast!.  It normally sits on my taskbar quietly monitoring things and I generally forget about it.  The only time I remember it’s there is when I do a complete scan, or when it makes me jump with a loud advice that it has just updated itself.

Every couple of months, a banner flashes at the bottom of the screen to warn me that an infected mail has arrived.  Sirens blare, and I have the opportunity to delete the mail, which I do.

Yesterday, it went off twice, which is very unusual.  Normally I could expect five or six alerts in a full year, so two in one day was exceptional.

So far today, I have had nine infected mails.  Yes – nine.

Is there a new flood of the damn things on the Internet?

Or have I just been chosen as the lucky recipient of this month’s batch?

11
Nov

How do Alexa rank sites?

   Posted by: Richard    in Tech stuff

For some time now, I have been collating statistics on four websites.

My main area of interest is in the Alexa trends, to see if they bear any relationships to other factors, such as traffic.

It would seem logical that a ranking should track traffic, but this is not apparently the case with Alexa.

There are some interesting things to note about the above graph.

The first is that the top line is pretty much stable, with no more than a 5% deviation throughout the period.  This site however has experienced a 50% growth in traffic over the time of the graph.  How come this is not reflected in the Alexa stats?

The bottom line is the growth in ranking for this site.  It has a very low traffic rate, and very few followers.  I post on it a couple of times a month, so it should be languishing at the bottom.  Yet the trend is constantly upwards.  Traffic to the site over the period is more or less a flat line, so why the growth?

Of the other two sites, one (the green) is a very popular blog though posting is sporadic, while the other (the red) is more of a niche site with regular postings.  Again the stats don’t reflect the figures I would have expected.

I hope Alexa know what they are doing, because I don’t!