I have discovered the reason........well, a reason anyway, why some people like myself cannot post comments on many people's blogs. The Blogger default setting for readers to post comments, is the embedded comment box. That's the format where a white comment box appears at the bottom of your post, and your readers simply type in their comment, and click on the button that says, Post Comment. Well, it turns out that many wireless internet services are incompatible with that format. If you are accessing the internet through a smart phone, or desk top computer, or lap top using a wireless USB modem, your ISP may not allow you to post on blogs with the embedded comment box.
If you have been wondering why only a few select people ever comment on your blog, it may be because you are using this default setting. Blogger has three options for comment formatting, the default, which I've just discussed, the pop-up comment window, and the separate page for comments. The latter two seem to work for everyone, while the default setting only works for some. You can easily change to the pop-up window, or separate page for comments, by going into you blog settings, accessing the comment tab, and checking off the selection you want.
I hope those of you who have the embedded comment box, will choose to switch to one of the other two formats. I enjoy reading so many of your blogs, and would love to leave my comments, but the embedded comment format you are using prevents me and others from doing that.
Thanks for having the patience to read this. Hopefully we can all open our blogs up, so that more people can fully participate in the discussions.