Molly's question: "How important is the TLD?"
The short answer is: "a lot". I agree with many of the comments made in the previous replies.
I would add a reflection.
(dot)COM has no intrinsic value, but only the value that the market (customers demand) assigns it.
But this is a habit that has lasted for about 30 years and unfortunately seems to continue. I think that is very boring, and should be overcome. Since it is difficult to find a word or a combination of two or three words with .com, strange variants are invented, sometimes really ridiculous and improbable just to get .com.
There are many new generic TLD that show the content of the name better than .com.
For example, if I have a website named "My Daily Diary", I don't need .com (commercial), maybe .blog is better.
If I have a website named "Olimpic sports", I don't need .com, maybe . sport is better.
If I have a website named "Sing and Song", maybe . music is better. And so on.
The new extensions help people to identify better the content of the website summarized by the domain name.
The mind set should change.
I read that even Google checks that the extension is consistent with the content. So, a blog is (dot)blog, sport is (dot)sport, music is (dot)music, ecommerce is (dot)shop, ecc.
The habits can change, I hope soon.