What Lifehacker is looking for:

Ubiquitous capture—that is, the ability to snag any thought or idea any time and any where it happens to crop up—is a key component to nearly every productivity philosophy. You want to capture those fleeting ideas before they’re gone, and you don’t want to waste brain power obsessing over remembering it until you can write it down somewhere. Below, I’ll walk you through the best ubiquitous capture system I’ve ever encountered.

How they solve it:

Simplenote is a killer web application that does one very simple thing very, very well. That one thing? Creating, editing, and managing as many plain text notes as your heart could ever desire. Apart from managing my to-do list, my ideas list, my shopping list, and virtually every other list I could ever need, I now write nearly everything in Simplenote (including the post you’re reading right now). Simplenote has a really good, open API, so you can also find desktop applications and smartphone apps that work with Simplenote.

I’m an Evernote user, and loyal through and through, but I love how easy and fast Simplenote is. Definitely worth a read here.