UBB.threads PHP Forum Software Community Forums General Suggestions and Feedback Who's Online observation

Hi,

I have noticed in Who's online that within the same minute a lot of not login "visitors"
looks at the same thread.
Here is an example, the image show an inactive thread from 2007 where the last post is also from 2007.
I can understand that individuals and bots scan a thread but not that many many from different IP addresses does it exactly at the same time.
Do you experienced programmers have an explanation.
This is not an single issue I can see it happening often now.