What are your opinion on this issue? I think yahoo has started giving quite a lot of weightage to delicious and yahoo myweb links when it decides SERP's in their own search engine. Also, i strongly believe flickr is being used for image search with tags of each image being given weightage for that keyword.
As far as Delicious and MyWEb, I think this is highly probable, but nothing even close to concrete.... For the most part though, I agree....
I don't know if Yahoo myweb is important for SERP but definitely is important for indexing. Put the feed of your blog in My Yahoo and it will probably be indexed in a day