[ziadbc]

These two services have similarities, but someone could just have well written an article that says "Wordpress leaves Tumblr and Posterous in the dust."

I like the idea of a YC company taking on an existing one head on once in awhile, rather than looking for an overtly specific niche. Posterous still has a ton of users, and I think at one point and time the digg vs reddit chart looked pretty similar. Look at it today and you will see a different story.

[scorpion032]

Digg let down themselves. I doubt Tumblr is going to do. If nothing else, they have a decent design taste. That alone is enough to survive and multiply.

[andreyf]

They do have good design taste, but their technical side is missing quite a bit. Just earlier today, I couldn't figure out how to submit an image by URL (since they automatically resized my original): kept getting some kind of "invalid file" error (I'm not uploading a file!). Scheduled-publication was also broken the 1 time I tried it. Very frustrating.