In economics, that's called a barrier to entry. In this case, I'm a customer (a reader) and he's made it harder for me to interact with him. Not only that, he doesn't post his email address either. There's no way for me to converse with him. He might as well be deaf. Blogging friend Jake Silver moved to Xanga for a short while and I had to register in Xanga to leave him a comment. That got old quickly. When it comes up now, I just leave. That goes for MySpace bloggers as well. When I find them on Thursday 13s, I just move on to the next one.
In a world of perfect competition like the blogosphere, any barrier you erect against visitors, even unintentionally, will be fatal.
Ron's got a great blog with beautiful photos. I'll post one here and send him a trackback to see if he gets the message.
Update: The Rockhound blog has the same problem. Argh! Their formatting is all hosed on their main site and I can't read the thing. I'd like to send them a screen capture, but I can't contact them without enrolling, registering, logging in and giving them a blood sample. %!@&*%!#&*%!!
Update 2: Rockhound blog works perfectly in Firefox, but not in IE. The Rockhound blog is outstanding with lots of tidbits of information for, well, rockhounds. What else would you expect? I still can't leave a comment without a WordPress account. Is that true with all WordPress blogs?
With what I discovered about my own readers, where less than 3% of them were willing to answer a simple single-click poll question, the percentage of readers that would actually navigate the WordPress account issue must be in the tenths of percents.
Update 3: This goes for trackbacks, too. If I link to you and can't send you a trackback ping, you can probably forget about me sending any more links in the future.