Many ask WHAT Exotic bling does .... Here is my take on it. Please feel free to add comments if you feel I have overlooked something.
The Exotic bling do many things.
Polishing and/or Liking:
Exotic bling are the largest polishable / likable bling, worth 1k to 2.5k credits and can bring in millions to trillions of points to its owner when mega polished on a high bling polish bonus day or liked on a Bling like bonus day.
Achievements:
The exotic bling can also be used to complete many achievements, from receiving one, to polishing / liking them and even activating them.
Activation:
Exotic bling can be activated once a day for 1 hour to attract people to your profile and also to increase daily LIKE and RATE counts for the day. Exotic bling can be activated once every 24 hour period, from reset to reset fu time each day. (activation ability never expires, you can do once a day for the rest of its fulife)
While multiple exotic bling can be activated at once, only 1 pony can be activated at a time unless one has more than 24 ponies, then 2 can be activated at a time.
UPDARE: activating an exotic now gives you an additional 10% bonus.. you do not get additional bonus for activating more then one at a time