Twitter advanced search to me is completely underrated - granted you can sometimes struggle in terms of being location specific, but still a great tool regardless. And of course it's free and right at your fingertips! 

Through running a simple keyword search of your choice, you can zone in on active real time conversations. Allowing you to join in when necessary, particularly when a user may be searching for advice within your industry. 

The fun doesn't stop there..... it's also great for monitoring relevant hashtags, commenting on breaking news, and researching your target audiences interests and needs. 

A great way to begin building those all important relationships online, maximise your exposure and increase your engagement. 

Who knows, it may even lead to some exciting business opportunities? Allocating yourself some time each day to utilise this tool really could pay off!