I have some questions (possible issues) concerning AdminCP -> Options -> Tagging Options.

1. Tag Cloud: Number of Tags. Whatever number I put in here, I only get to see around 20 tags in my tag cloud. I tried 10, 99, 999... Is there somewhere else to set it? I couldn't find any options for it in Site Builder.
2. Tag Cloud: Build Usergroup. I'm not 100% sure this works as expected. Even a low-privileged usergroup seems to be able to see subforums that should be hidden.
3. Search Tag Cloud: History (Days). I don't understand exactly what this is supposed to do. Are the tags changed in some way when somebody searches for them?