MorePager

I've just started to use "MorePager" and I noticed that despite the number of items in a certain result list the "More Results" link can be clicked only once, so after the view is refreshed it is gone, even if you have more results to show.
To be more clear: let's say you have 43 items.
First, what you see in the list is:

item 1
item 2
...
item 20
more results (link)

You click the link, what you see then is:

item 21
item 22
...
item 40
no more results (link)

You are not able to see item 41-43!

What is the purpose of it?
Do you experience the same or I didn't take a good look at it?

Check i.e vanillasearch for a frequently used word.
http://vanillaforums.org/search