  Blogging is a popular way of expressing opinions and discussing topics.
Bloggers demonstrate different levels of commitment and most interesting are
influential bloggers. Around such bloggers, the groups are forming, which
concentrate users sharing similar interests. Finding such bloggers is an
important task and has many applications e.g. marketing, business, politics.
Influential ones affect others which is related to the process of diffusion.
However, there is no objective way to telling which blogger is more
influential. Therefore, researchers take into consideration different criteria
to assess bloggers (e.g. SNA centrality measures). In this paper we propose
new, efficient method for influential bloggers discovery which is based on
relation of commenting in blogger's thread and is defined on bloggers level.
Next, we compare results with other, comparative method proposed by Agarwal et
al. called iFinder which is based on links between posts.
