Red Sweater has released version 4 of MarsEdit. I use the application every day. $24 upgrade price was a no-brainer. It was a one time cost that adds the license to my MacBook Pro and iMac without having to buy it twice. The fact you can use it as a journaling tool offline for free forever is a great thing. You only pay when you want to publish to an online service. John Gruber linked to the 2005 review of version 1. 

Amazing how much this simple concept has evolved. I couldn’t live without it.