Saves so much time in searching for stuff I've already seen
Can take a while to index if you have a large history & bookmarks -- but after that it's lightning fast.
I'm hopeless at organising my bookmarks. For me they're more a long term thing. So for research I'm doing e.g. this week, I have tried various bookmark/tab organising tools, all of which need me to remember to click on something. But Memex just gets out of the way and lets me work in my normal chaotic manner.Jonathan Hugo Pienaar has used this product for one month.