Well this is something of a bone to pick at. Looking between the whos on line island and the whos online detail page. They hardly ever will match.
The time limit is pretty much how long ago they were online to appear. But that only applies to the detail page if you refresh your browser constantly.
Then add in there is a internal cache time for the island and the detail page, it confuses people more.
Version 8 was addressing this issue to allow you to also set the internal cache time to update the info in the browser.
So bottom line.
You have it set for 5 minutes.
That means a user needs to be online for five minutes to show up.
But only after the internal cache updates the info.
Meaning for example I am online for the last five minutes and I do not appear in the island because the internal cache has not rebuilt the island.
But I select the whos on line link to goto the detail page which forces the cache to be rebuilt and I appear.
Then I go back to the summary page and I appear in the island.
Clear as mud I know.
FYI.
Goto your whos online detail page and time how long the screen updates on its own.
That time would probably be the best for you.
