I don't know that I would consider sponsored reviews from mom bloggers a bad tactic. Not that it matters, but I have a few clients in the home improvement niche that regularly do reviews when they get free product. As long as you aren't asking for a favorable review in exchange for samples... who cares?
Also, don't forget social... FB, Twitter, Plus, Pinterest, etc.. all has good affects on any online marketing plan.
Finally, some directories as well as blog commenting still is helpful as long as you are doing it for the right reasons... don't purposely search out do-follow blogs only for commenting. Search out the best places to leave comments and build relationships with those bloggers, I promise you if you leave some butt kickin' comments on a food bloggers' site, you will have a better chance of getting a guest post with them.