Is there an appropriate schema type for bookmark items such as in Reddit, Digg, etc.?
Is it OK to use the "Article"?
article is appropriate for a blogpost, so that makes sense to me. there is no specification for bookmarks in schema.org. i would use rel="tag" to implement microformats. microformats are not the same thing as schema.org/microdata. schema.org article: http://schema.org/Article microformats tag: http://microformats.org/wiki/rel-tag