Is it wrong in publishing multiple articles (say 3 or more articles at the same time to my site? Will it harm my SEO efforts? will Google frown at it?
The frequency at which you post isn't frowned upon by Google. But try and keep your rate consistent. Rather than doing something like 3 in one day, then nothing at all for 2 weeks, then again 3 in one day, it would be better if you released one every day. Looks better if the site is frequently updated, and has something new for the visitor to see.