Using Echo or any alternate spellings will create legal liability and is out of bounds. This page is an archive of some of the conversations on the topic.

[FrançoisGranger] Ekko will probably make a good choice. Easy to remember, and few collisions.

[ArveBersvendsen] I'm for Ekko, provided the similarity won't cause any legal problems. My #2 choice would be SOS. Melange is on my definite no-list, as it's a brand of margarine. And I'm opposed to any name that contains 'Blog', 'Log', or 'Weblog' -- this goes way beyond blogs.