ccti-2a-5- Activity 11-Personal Learning Network

I recognize the benefits of having a personal learning network.  However, judging by my track record with posting on facebook and responding to e-mail,(even snail mail) how effective would it be?  I saw my birthday messages five months after my birthday.  I am a member of an educators' group set up on fb last year summer. I have never visited siince last summer.  My problem would not be setting up a pln, it would be maintaining contact.