Is it ethical to blog about your publications to circumvent journals?

I've always been interested in communicating research to the public. I also strongly believe that research publications should be in the public domain, especially if the work was funded with public money. I found the responses to this question to be pretty interesting, and they got me thinking about scientific blogging as a solution.

So my question is -- can I put up my scientific findings on my blog or webspace that is not written exactly like my published article but contains essentially the same data and results?