bleme is a meme for a blog.
Through understanding of the terms meme & blog, the term bleme becomes a simple natural progression.
A meme is defined as "any unit of cultural information which one mind transmits...to another mind. Such examples can include thoughts, concepts, ideas, theories, opinions, beliefs, practices, habits, songs, dances and moods." (Wikipedia, 2006)
A blog is short for weblog. A weblog is a journal or newsletter frequently updated and intended for general public circulation. Blogs tend to represent the personality of the author or the Website.
A bleme has come to represent the fusion of the two i.e. a meme transmitted via the internet, websites or blogs in some sort of a viral fashion.