It appears that you get to blink stars on any message as frequently as you want, as long as you want. Some child on The Bridge has just found out about this and the only approach I can think of - banning people at random until the abuse stops - is not something I feel like applying right now.
Please fix this, either through rate limiting, not counting unstar events towards your 30 star/day limit, shadow star bans or whatever means necessary and super-linear combination thereof.