If you do drive-by responses to the blogs you may find of interest and are not reading many of the valuable comments posted by others sincerely interested and affected by the subject of the post, you are losing potentially 50% of the effectiveness and benefit of the message. (my guesstimate)
A great blog means that great comments ensue. Even a not so great topic may have great ideas in the responses!~ Comments are feedback and add more nuance and even other links and ideas: they flesh out the principal content. So you gain more!
Yes, maybe a subject is not of great interest to you but someone who posts may add something that will definitely benefit YOU. So, if you have the time, read through the comments.
I have read comments on blog topics that are even more salient, important, and actionable than the main topic!
You can even question the commentators or ask for more information to explain a point of view.
You may also get an idea in the comments to develop a blog topic that you can develop and post -- something that has been in the back of your head but just didn't quite realize it and knew you needed to act on it.
(Responding rationally, in an understandable mode of English, also raises your profile in the minds of others.)
Skim through the comments below the blog and find some additional gold nuggets of wisdom!~ It has happened to me, and I can only guess it will benefit you as well.
Just think: you could have missed some great ideas!! So, go back to the thousands of posts you ran through and read some of the comments. May be worth the while!
Yes, I know, so many blogs, so little time!