I believe serious blogging comprises of four important things :
# Presentation – Writing good quality posts (whatever type one write about) regularly at one’s blog and being active.
# Communication – Actually reading subscribed blogs’ posts and commenting on them (and not just writing anything for comment’s sake..just to mark your presence).
# Reciprocation – Replying to comments on one’s posts.
# Networking – Checking out regular commentators’ blogs or new blogs..you know like friends of friend and possibly subscribing to those thus extending your network and acquiring long-term blogging relationships.