If the blog is well written (i.e. free from typos and grammatically correct), technically correct (with appropriate levels of expertise) and adds something relevant to your industry that did not previously exist (there is no sense in rehashing an existing article if you don’t add a new perspective / level of expertise) then I would say go for it!
On the whole employers are looking for something to differentiate a candidate from their peers, and writing a blog / articles can be an exceptional way to do this as long as care is taken to make sure that you come across in the best possible (and professional) light.