In this wired (wireless?) age, every educator can and should have their own personalized professional development plan. The sources of information you turn to--whether a colleague down the hall, or a colleague half a world away that you only meet up with online, or a library full of resources, or any online resources you rely upon--make up what might best be termed your personal learning environment (PLE.)
Your PLE is not the same as my PLE. We are unique individuals. We have different needs, different specific interests, different strengths and weaknesses.
That said, we might connect using the same tools, and you might share resources I find valuable, and vice-versa.
In the online learning space, there are a great many sources of information that can make up your PLE. You probably use a wide variety of tools as elements of your own personalize learning, right? Here is how I mapped out my own online PLE: