Prepaid micro-SIMs for the iPad look like a great deal for iPad owners who mostly use Wi-Fi but occasionally want on-the-road access. But be careful -- if you don't regularly use your SIM, it might expire altogether.
Picture from Wikimedia Commons
Lifehacker reader James B wrote in with this cautionary tale:
Just thought I should point out a titbit I got from a Tesltra techie today - if you don't recharge your iPad microsim for a couple of months, they will kick you off the network and you'll have to buy a whole new SIM! I'm pretty sure this only happens if you don't have any other services on your Telstra account (like me), but I just had to fork out another $30 for a new SIM . . .
As James points out, this doesn't necessarily apply to all deals from Telstra, but if you are a customer whose only relationship with Telstra is through your tablet, it's worth bearing in mind. If you've encountered similar issues with your iPad SIM, tell us about it in the comments. Thanks James!