Would a hiring manager at a small-to-medium consulting firm/corporation consider active blogging by a candidate about Programming/software/technology as a positive? Should the candidate disclose this information during the interviews or put it on the resume?

Thanks for the answers, So far the views about this topic has been..

1. Don't mention the blog if it is not relevant to the job.
2. Mention the blog, if you believe your blog has quality content.
3. Potential risk of not being accepted by culture of the employer's workplace.
4. Could be a valuable for consultants to publish & preview their skills and experience.
5. Certain Employers may consider blogging of a candidate a plus.
6. Be careful what you post on the blog,no badmouthing,rants and overt criticism of others.
7. Do not lie about blogging,if directly asked during the interview.