Bitcoin Blender has been around since 2014 and this week it closed down. It is the second such service to fall in about a week, albeit it appears it did it on its own terms. The move comes on the backdrop of law enforcement constantly mentioning that the service prevented tracing criminals that used it. The service gets a commission between 1% and 3% of the total amount it tumbled into the public ledger. Users are encouraged to use alternative services, such as Monero, to fill the gap.
Source: https://www.bleepingcomputer.com/news/security/bitcoin-blender-exits-cryptocurrency-mixing-on-its-own-terms/