2 1/2 year old business - established website - once a week blogging - sharing across Linkedin and Twitter. No Google ads but some advertising on AVVO.com. Linkedin, Avvo and Yelp are top three referrers. Want to get more aggressive - what's the best way to spend a $1k month budget - agency recommendations welcomed.
Radio ads cheapest form of mass media. Charity events. Sponsor small events, usually rather cheap, better yet, participate, and make sure you are listed off as the sponsor.
Fliers is another way. In certain areas, you can be a "sponsor" for a stretch of interstate/autobahn by cleaning it up once a few months, and you get your organizations name on the sign.