One tip that never fails is to find hubs that are of interest to you and post meaningful and useful comments.
Avoid posting generic comments like: (great post, that's a good idea, etc.).
Give some quality information on the topic, and this will make people pay attention to what you have to say.
In other words, you would become an 'authority figure', and most people reading the comments will click through to see what else you have to say on different subjects.
I hope this helps you.