You most definitely asked, and we most definitely answered by
introducing topics in Lightning Experience. No
need to set up anything, as our Lightning Experience org is automatically updated
to support topics.
View a topic detail page, edit the topic description, see how many
people are discussing the topic, see trending and related topics, follow topics that interest
you...in short, enjoy organizing the heck out of your Chatter feed. Topics even show up in
global search results. So go on...tag away! This feature is new in Lightning Experience.
A post can have up to 10 topics, including topics added in comments. Assigned topics are
associated permanently to the post in the system, even if you remove them visibly by editing
the post. You can use topics on a record’s feed, but topics on objects aren’t available in Lightning Experience.