It makes perfect sense. If you receive all your reports via email you need to save them some place so your 20 MB mail box doesn't overflow and whoever follows

It makes perfect sense. If you receive all your reports via email you need to save them some place so your 20 MB mail box doesn't overflow and whoever follows you needs to be able to search everything so you stash it all in PST files on your network share drive and then pass those PST files along to the next guy that takes your position. At least that seems to be what the article is basically describing, albeit poorly.