The whole point of starring in chat was to mark either statements you liked or something good or amusing that also held a significant importance. Lately I have noticed that multiple users, currently unknown, star either statements that have no need to be starred, or blocks of statements.
Example would be in Star Lobby of AskUbuntu Chat Room. where Another star for just nonsense! Who is doing that???? gets starred. It does seem trivial to some, but to most of us it removes the point of having it in the first place.
I would like to add that in both cases it seems that simply telling mods to do their job doesn't help the situation. A mechanic to chat ban for starring things so often. Use too many in a day, get banned for additional day. However, how the number comes into should be be heavily discussed.