This is because room titles are used like tags. I heard from the creator @Don that it's inspired from services in the Web 2.0 era of the 2000s. The detail situation for using them as keyword and "mashing up" with the other services is explained here. However, i think understanding this will require high context, such as knowledge of the now-defunct services available at that time.😅nevent1qqsvexfrhje30h4hdatx486zgzxwnl3y37lt2m0ky9nlg6htjqzae3cppemhxue69uhhjctzw5hx6ef0qgsxkznqele7efdzkfg9ejelwyeass3qgh977s8n6trp38ash9fw04qrqsqqqqqp035wpc