I've loved Reddit.com from a viral / incoming traffic point of view, but you've got to be a broad contributor, ensuring that you post non-business content and interact on other's contributions. If you only self-promote, you'll quickly get banned from the "sub-reedits" you really want to post to.

It helps to make sure your customers and friends know when you post on reddit. Organic "up votes" can take your links from getting a few hundred hits to 10,000+.

Hope that helps!

Ken Clark
Coach, consultant, and therapist to entrepreneurs

That depends on your product and service.

For example if you are targeting professionals than LinkedIn is your way.

If it's youngsters than Twitter and FB.

Reddit and Quora can also be great source.

Twitter and LinkedIn can both be effective with good organic strategy, but I'd hardly say that guarantees you'll go viral or achieve fame. The largest reach is always going to be with good targeted paid posts. This all comes down to having a diversified content strategy. There's no free lunch. You are going to work hard and you will have to pay sometimes to leverage the hard free reach.

No easy answer. We have worked with hundreds of businesses on this front. Facebook is good and worth it if you target correctly. Twitter is excellent for reaching reporters and bloggers. Instagram is good for the fashion, lifestyle, artist, foodie audience. There are sooo many channels to choose from. Pinterest is excellent in terms of beautiful consumer packaged goods, fashion. Choose your channels and strategy according to how you are targeting. They are all valuable for their own reasons. Your owned content is the most the valuable and effective way to reach people. So that means writing excellent blog posts and publishing them on a consistent schedule -positioning yourself as the SME in your space. I agree about Reddit -it's insanely powerful but if you're not authentic and you're there to sell they will boot you out in a heartbeat. Vine, Snapchat, Reddit, Google+, YouTube, Feed, Thumb, Medium, Chirp, Learnist, RebelMouse, Yammer, Ning, Tumblr... and I could list hundreds more. There are thousands of tools and channels. Find the right one(s) for your company and create a strategy around those channels. Pitching your story to high profile blogs or websites from an editorial standpoint is also a good idea. PR alone or social networking alone won't result in being propelled to fame. 'Fame' comes when you have that magical cocktail of opportunity, timing, preparedness and you're offering something that truly sparks people's imaginations. Happy to hop on a call about any of this. Good luck!

It depends on the type of startup and the users its products are aimed at reaching. Twitter is best for influencing the influencers whereas Instagram would best target a younger audience. These days Facebook is, on the other hands, increasingly used by an older audience (35-55).

You can use Hootsuite and buffer to do the job for you as they are good for organic sharing.
Besides if you do have any questions give me a call: https://clarity.fm/joy-brotonath