we could add quite a few more.
avoid 9 am - 7pm. it's busy like the rec.

Avoid 4th floor past midnight. You don't want to walk into an uncomfortable situation.
Consequently, if you'd like to be the creator of that uncomfortable situation there are computers on each stack level, secluded from the rest of the library. Only the real diehards know about these. Again, if you need to be alone...there you go.
Outside of corn dogs, nothing good in vending machines.
Lots of horny hot asians there. Too bad all the male asians are metro/gorgeous.