Means that it's somewhat surprising. A regular person would likely consider looking at a lock screen to be no big deal. In this case however, the word "Skeezy"

Means that it's somewhat surprising. A regular person would likely consider looking at a lock screen to be no big deal. In this case however, the word "Skeezy" displayed on the lock screen was apparently a link that connected the owner to what was being investigated, and so material to the case.