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The Twitter account of Cassie, previously @cassieventura, has been deleted. I checked to make sure that the username had not simply been changed and the account itself has been deleted.

In April, Brian Angel of Day26 deleted his account only to return in October.

It's a shame to see her leave the service, if that is what has happened. But, nothing is for everyone - Twitter included. We all have to decide what to spend our time on.