I have written several times about my frustrations with regard to the inability to get useful search results when searching user documents. In my view, this means that Logos has not delivered on the promised feature since it is not fully usable in its present form (it is difficult to exploit tags when you cannot search them adequately).
Community Tags can be used in resources. I am personally not very fond of the idea because I find that tagging preferences and practices differ too widely among users and it makes for a mess. The advantage of community tags over user tags right now is that the former is available in resources (thus you can get full search results if you search resources for them) but the latter is not. I am not sure why it is so. It is regrettable.
For the time being, when I want to tag passages in resources I own in relation to specific projects, I have to make a note entry and tag that entry. But then of course, I'm back to the problem above (limited search capability). I have been using a work-around that provides a limping "solution". I use T-<tag entry> as tags, where T- is a prefix so as to be able to use CTL-F to differentiate between these tags and occurrences of the same words in annotation texts. But I am well aware that I am growing a number of entries that are T- tagged and that if later, hopefully, Logos fixes tag searches, I might want to get rid of all these prefixes, and it by then, it could be a painful job. So, I am still really intent on asking Logos to look into this and sooner than later.
Labels can be used as a middle ground between community tags and tags. They can be more "personal" in formulation and use than community tags and can be used in resources as opposed to user documents. The problem with labels is that they require prior definition (style, text, attributes...). You can't just quickly add a new label. One could presumably use a generic label (label = "interesting stuff" attribute = what you would normally put in a tag or a short description). But then different types of entries would not be sufficiently differentiated. So I don't think this works as a replacement solution.
Two purposes for writing the above:
(1) Please Logos RESPOND.
(2) I am looking for input from other users. How do you use these features. Have you found solutions around these limitations? Do you have enlightening examples of how tags (for instance) can be used extensively when we cannot search them effectively?