### [tag:user-behavior]

Nothing special about *users* here. However people's behavior can be very different in different environments; what people do in real life isn't always what they do online. So:

 1. Go through [tag:user-behavior] and retag the few questions that are not about online scenarios (if any). I haven't checked all the questions, but the sample I looked at was all about online stuff except https://communitybuilding.stackexchange.com/questions/875/how-do-i-help-members-of-a-community-focus-on-work-when-they-want-to-be-social, which is about physical meetings so I suggest [tag:meetings].
 2. Rename [tag:user-behavior] to [tag:online-behavior] and drop the [tag:user-behavior] name.

### [tag:problem-users]

“Problem” is kind of a subset of “behavior” here. I think a lot of these questions should be tagged [tag:online-behavior] in addition to [tag:problem-xxx]. As for the xxx, I think continuing on the “members” theme is fine: rename to [tag:problem-members] and drop the synonym.

### [tag:user-retention]

Could be renamed to [tag:member-retention], or just [tag:retention]. “Retention” isn't just about members, it can be about other actors such as [customers](http://en.wikipedia.org/wiki/Customer_retention), but I think that *in our community*, “retention” is intrinsically about members.

[Monica suggests](https://communitybuilding.meta.stackexchange.com/a/1297) a distinction between *member* retention and something else — I guess *audience* retention. I'm not sure about this. Should we have [tag:member-retention], [tag:audience-retention] and maybe even the intermediate [tag:participant-retention]? It feels to me that we're getting out of community building and into marketing if we get that serious about non-members.

This thread shows that some people are not familiar with the meaning of “retention”, so we might want to throw in a synonym, but I don't know what. Please suggest what you'd use if you aren't familiar with the word.

### [tag:user-engagement]

I think we can safely drop [tag:user] here.

### [tag:expert-users]

This is about experts. Just rename to [tag:experts].

### [tag:user-experience]

[User experience](http://en.wikipedia.org/wiki/User_experience) is a concept. Keep.