Here are this weekend’s Mac riddles to entertain you through family time, shopping and recreation.

1: With twenty million users within a week in 2011, it’s now a file provider.

2: With an address book and shared calendars in 2008, it’s still chunking today.

3: On subscription for backups and anti-virus from 2002, it lives on in a domain.

To help you cross-check your solutions, or confuse you further, there’s a common factor between them.

I’ll post my solutions first thing on Monday morning.

Please don’t post your solutions as comments here: it spoils it for others.