If you are running a blog on which, you provide tech. Guides then there may be chances that your readers may not be able to apply your guides. And at that time, your visitor wants to chat with you to get the proper solution. There is a large number of the website available across the web which providing chatting plugin for blogs or WordPress either for free or charging some monthly fees.
I have tried almost half dozen of plugins (both free or paid) for my blog and noticed that no one is providing the proper features to satisfy my needs. And then I came across the Getsitecontrol plugin that not entirely but providing almost all the features that I wanted to get on my blogger blog.