Those have been around a long time Ulstrup, at least a year. Ink has been using Mozilla as their spider's user agent for most visits, but as you can see they are not really concealing who they are, they identify themselves pretty clearly in the rest of the UA string.
Well it's easy to miss, amazing how having Mozilla as the user agent makes it so much harder to pick out. Those folks that use log analyzers that rely on the familiar UA for spiders must think they never get spidered. :)
>- and now it's spring, and time to wake up :) I like that!