Hi! Just so you know, you can click on the $ up there to support XKCDB. (This box will go away after you vote once.)

#10425 (+9/-0)
<browncoat> Good night, sweet denizens.
<browncoat> And salty denizens.
<browncoat> And... uh... other flavors of denizens.
<Kalium> browncoat, umami denizens, sour denizens and bitter denizens
<browncoat> Yes, right, those!
<Kalium> you can only sense sweet denizens on the tip of your tongue.
* browncoat licks snark
<taixzo> that was based on a flawed study. You can actually taste all flavors of denizens with all parts of the tongue.