Hi Marijn,
thanks for responding, I guess I got the wrong impression of the Moz functionality, thought that the weekly updates were instantanious and provide a "as it is now" perspective of authority, so its handy to know, so thanks for the share 
I have a query about updates, (in relation to the Google index) that you might be able to help me with? Only if you have the time of course.
I provide software that displays a footer link, I know for sure which sites are using my software and that a little under half retain the footer link.
A best case guess of the amount of links that are pointing to my main are in the order of 400k (maybe even double this amount), because it varies per site dependant on the amount of pages, one site, has 10k pages (which is probably the largest) but the others range from 100 to a couple of thousand pages (all of which contain a link back).
The problem is that my domain authority doesn't seem to reflect this amount of links. One would think even new sites would pass a little link juice, or is it possible that Google is discounting most or a selection of them?
I was thinking of compiling a list of sites that use my software, with links so that Google will crawl the sites, but I read that this can affect authority negatively?
fyi - Moz says that there are only 35k, which is less than a 10th (at best) of what's out there.
Best wishes, Lee 