Had a bunch of jobs and a bunch of different superannuation funds? SuperSeeker helps you track down superannuation payments you may have misplaced or forgotten about.
To access the service (provided by the ATO), you'll need your tax file number and date of birth. Plug them in and it will list any unclaimed funds. Enough details will be provided to help you get in touch with the fund and claim or roll the super into your current main fund. It's a one-trick webapp, but a trick worth performing for virtually anyone who has had multiple employers.