This is a very minor one, lol, but it gets me every time.

The Action shown for players answers the question "What was the player last doing?" and the answer will be "Logging out" or "Browsing..." or "Playing..." etc.

I would much prefer it to be in the past tense and answer the question "What did the player last do" - ie, "Logged out", "Browsed ..", "Played ..", etc.

If you wanted to get fancy you could use a present tense for actions done initiated in the last, say, 10 mins. [All except the logging out - once done that's done. This is the one that most gets me: What? still logging out?]

A more important reason for this feature is that it's hard to tell at a glance whether the last action was recent or hours or days ago. Maybe you'd even want (lol, like you want a todo list 100,000 items long!) to go as far as using colours to indicate recency.