Social share bars (like Buffer’s awesome Digg Digg) make it quick and easy for visitors to share your content, promote it to their networks, and attract new visitors.

Whilst it’s always good to include the likes of Twitter, Facebook and LinkedIn, you can lose out on precious shares by failing to include some of the more obscure social networks – or by overcrowding your share bar with dozens of icons.

Thankfully, AddThis has a smart solution: a dynamic social share bar that uses JavaScript to identify which networks each visitor actually uses.