You said that Pinterest is good social network i have been on pinterest for last 6 weeks and not getting much traffic yet.
Pinterest is a different kind of Social Media platform. Lot of small business owners and marketers didnt know well how to promote their business on Pinterest. Compare to Facebook, Twitter, Google+ or LinkedIn its not easy to promote your business on Pinterest. A lot of try to promote the brand through their personal profiles. I think its not working good because users just think that is only for self brand promotion and not a company brand promotion. If we need much traffic we must promote our business as a company brand. According to the researches 80% on pins on Pinterest are repins and not their own product. We want to create original contents for a good marketing purpose. Pinterest is a good place for product marketing but not good for service marketing. Basically its a photo sharing platform. Definitely we need more times to win Pinterest marketing.
Chime is one of the name that I want to add on and its growing so if you stay active and collaborate you have good opportunity of earning some traffic.
please have a look some of good social networking sites facebook.com twitter.com pinterest.com/ ning.com/ pinnme.com/ multiply.com/ mylife.com/ bebo.com/ friendster.com/ meetup.com/
Also, some great networks for news, Q/A and stuff like that: Quora.com Muckrack.com For music: 8tracks.com A great professional tool as a web business card: About.me For finding interesting tips: Snapguide.com For book readers: Goodreads.com Smalldemons.com I am using all of them. Great sites I recommend.
Wise decision. It is better to wait for sometime before jumping in the water. Good thinking. All the best.
Tumblr is good. I mainly use tumblr to drive traffic to my site. You can build a lot of followers in a short time just by re-blogging or sharing related, useful content. Instagram is good too. They are getting bigger by the day, even celebrities have started to use them. So, you can try them out too.
Why is it you would want to use anything else? The big ones are where the traffic is and what everyone uses and most other social networks are pretty much cheap spin offs!