Wow - there's a TON of misinformation in this topic already.
1. Accounts aren't being locked en masse as some would like you to believe. Guests that have "frozen" accounts are due to conflicting ticket media, which is surprisingly nothing new.
2. Validation of ticket media being used for entry has not been added to the kiosks in the park (unless something happened within the past 48 hours that I was not made aware of).
3. For those complaining about people who don't cancel Fastpasses and let them go to waste if they don't use them - guess what, it doesn't make a difference, so save your breath complaining about it on here! Why? The system in which Fastpasses are distributed is set up so that fastpasses are not "redeposited" once a guest cancels them! Instead, a master planning system allocates a specific amount of fastpasses per attraction each day based on many different inputs (forecasted park attendance, operating hours, estimated standby line times, average no-show/cancellation rate, etc) in advanced. Manual massaging of the data to the master table (which contains the inputs) is sometimes done by the analysts if they feel there's some variations that aren't being picked up by their forecasting (i.e. a special event, a major attraction at the same park being shut down for an unplanned refurbishment, etc). Fastpasses are only added back to an attraction during the actual day the fastpasses are meant to be used (i.e. today, 6/14, the system will start to reallocate more Fastpass inventory for all attractions for today only). This is done throughout the day and is done based on an equation that is analyzing the actual day of fastpass usage and cancel rate, park attendance, standby wait times, etc. It's for this reason, that you should NEVER listen to any of the CM's working the kiosks who will loudly proclaim that they are out of fastpasses for any attraction (even at Pandora). This is simply not true and should not prevent any one from trying to see if inventory of fastpasses exist for any specific attraction.
The ONLY people that park management are specifically targeting in Fastpass abuse are tour guides who have a record of multiple consecutive day visits and an above average amount of tickets linked to their MDE account. That's it. They are NOT targetting Lil' Jonny who is using Grandma Ethels fastpass for Everest because she doesn't want to ride it. The blogs and other fan sites have been over-exaggerating the extent of WDW's crackdown and sensationalized it to a point that all the eccentric personalities on the "other" board are losing it for no reason.