Consider the following graph:
This chart shows the total number of hosts on the network that were connected in the previous 24 hour period. We collect this by listening to Address messages that are broadcast over the network and I got it from bitcoinstatus.rowit.co.uk. This graph and a number of other graphs on that site show significant reduction in the number of hosts on the network.
Does this mean that the Bitcoin network is slowly closing down? I can see that the graph seems to be quite level at the end, but the trend seems to be downwards.
Thank you jim618 for providing me with the link in this answer.