Looks Good, but Be Careful
I generally concur with John Ferringer's comments, but add one more issue.
This web part appears to interfere with Anonymous Access.
When users on a large private network who are off the domain try to access a page using this web part, they are prompted for a username and password.
This issue alone meant we had to stop using it, as Anonymous users could not access our Intranet homepage.
Loses its settings if you make any modifications to the web part.