It's nice to be able to share notes across devices and operating systems. Sometimes I email myself, but for me, that tends to get a bit messy. I tried Evernote and it seems nice, but there's no native Linux client.
Luckily I found Simplenote. I have it installed on Ubuntu, iOS and MacOS and it's working great on all of them.
Things I like:
- It's free
- It's available on most platforms
- It has an attractive uniform feel across devices
Things to note:
- I had a few problems updating at first, although the wrinkles seem to have been ironed out now
- It's in the "cloud", so I wouldn't keep anything on it you aren't prepared to share with others
- It's for text only, although I believe you can embed links to images if you desire