Oh, what did we do before our phones knew where we were? The service If This Then That (IFTTT) has now added features that will act on your going somewhere or being somewhere and it's tremendous. I use the hell out of location-based reminders: I am forever telling Siri on my iPhone to remind me to this or that when I get here or there. Forever. But IFTTT has much fancier uses and Lifehacker just compiled some of the most deliciously daft, make-you-smile ones that are also useful.

For example, my favourite is being welcomed home automatically a-la Marty McFly with your own theme song a la Ally McBeal:

Nothing is cooler than walking into a room to your own theme music and this recipe makes that possible by using IFTTT, Dropbox, Hazel, and Automator. Basically, when you enter a location, the recipe creates a text file in Dropbox which triggers Hazel, then starts an Automator workflow that turns on iTunes and plays a track. You could use this basic idea to launch pretty much any Automator workflow you wanted.

Okay, maybe it's stretching things to say this is useful. But others in Lifehacker's list are – and that's why they're not my favourites.