Part of the challenge is social networks is perception and how your avatar is perceived. There is value in having a persistent avatar – but make sure it is the correct avatar picture. Commenting can positively impact your personal brand. Volume and content are key in others perception of you. Commit over the long term. Be honest, consistent and represent yourself as you are and maintain attitude across the board. Take inventory of what is out there on the web about you. Making comments on the internet is open, public, and permanent.
The development of social relationships and damage control is all part of existing in fast moving arena of online media and space. Relationships move quickly and missteps are amplified. Retaliations and flame wars are counterproductive and reflect poorly on you for engaging in the behavior. Take disagreements offline and treat the other person publicly with respect.