Some observations:
Everything we post on Mudcat, music or BS section is already available to anyone with a web access. Our posts are indexed by search engines such as Google. We have no control over who reads, quotes, or uses what we post. Anyone waiting for people to ask permission to link to their posts on a public internet forum is going to be unhappy living in this millennium.

It is already quite easy to create a Hyperlink to a Mudcat thread to any web page whether it is on Max's list of not. Let's try it and see how long it takes.
Link to Mudcat Thread is in the upper left corner
About 3 minutes.

Now let's link to Facebook with the new share feature. Hmm, a few seconds to create a link on Facebook. Most of the time was spent writing the comment. (Plus a few seconds to delete the post, a wonderful feature).

Let's link to Facebook again by cut and pasting the Mudcat thread URL from the browser address window to Facebook. A few seconds, also. The resulting link on Facebook looks exactly the same as it did using the share feature. The Facebook links were only visible to my Facebook friends. The link on the webpage is visible to the whole WWW.

The share feature is available to guests. Log off of Mudcat and see for yourself. Don't forget to log back on.

Members vs. guests. Let's log off again and join under another name with a different email address. About 30 seconds. (It looks like I'm stuck with it forever, too. I don't see any way to un-join). Limiting the share feature to members seems pointless when any guest can become a member in less than a minute.

Some opinions:
I think sharing threads with like-minded friends is a great innovation and I hope it brings in new Mudcat members who will introduce me to new music and ideas. I hope their opinions are different than mine and that they will discuss them.

I'm not frequent reader of BS threads, other than reading the joke threads--I love the joke threads. Anyway, everything there is already readable, searchable, and linkable for anyone on the web--with or without the new share feature.
- Phil