There’s something about the tone of my movies that some people find uncomfortable because sometimes they’re laughing at maybe ...

Lindsey Ellefson is Lifehacker’s Features Editor. She currently covers study and productivity hacks, as well as household and digital decluttering, and oversees the freelancers on the sex and ...

When you launch a new product, your vision for its use might differ from how customers actually use it. Ivar Jacobson created the first use case model in 1987 while working at Ericsson. It started as ...