Whenever I click the "Change forum title" option, I'm shown a page that says I haven't earned any titles. This page redirects me to my achievements, and... I'm not sure where to go from there.

How do I change my forum title? I don't want to be a silly spamming sausage anymore. 8(

Click this link

then, if you have any titles earned, go Here to change title

the reason it takes you to the Achievements page, is that most of the Forum Titles are gettable that way. Silly Spamming Sausage comes from the number of posts you have made, so if those Achievements seem not doable, start talking a lot. Just make sure you don't spam.