As a ‘Regular’ user, you are granted certain privileges including the one you mentioned.
Users at trust level 3 can…
- recategorize and rename topics
- access a private “frequent flier’s lounge” category only visible to users at trust level 3 and higher
- have all their links followed (we remove automatic nofollow)
- spam flags cast on TL0 user posts immediately reach the action threshold
https://meta.discourse.org/t/what-do-user-trust-levels-do/4924/6