Ask HN: Facebook only marketing campaigns?

We're a small 2 person startup catering to a very specific niche market. About 6 months ago, we hired a marketing firm to get us some exposure on Facebook and so far, it's been going well. Almost 2000 page likes, we have a high interaction rate with the page and it has generated over 500 new users on the website.

My problem with this marketing firm as of late, is they only target Facebook. No Twitter, no Google+, nothing.

I've questioned this multiple times, even citing articles on how people in our demographic are using Twitter more; that its a good idea to have a Google+ account for SEO rank, etc... and I'm continually being shot down by this firm as their a waste of time / money.

Finally, this weekend, I told my partner, if their not willing to do Twitter, Google+, let me do it and let's see what happens. He said yes, and I began making some changes. Integrating Twitter's API into our blog posts to automatically link to new articles, Google+ button at the top of the page, etc...

Today, this marketing company questions the Google+ button I put in the header and rudely suggested I burry it.

Every time I bring up the other networks we're not active on, I get shot down by them.

Are they a waste of time and money? Should we pursue them? Is this guy an a?

-- frustrated