The taxonomy_intro module simply enables you to display an introduction at taxonomy term pages where normally only the list of nodes related to this term is shown.
If you just want to add Flash content to nodes without having to worry about writing any HTML or PHP then this module is for you! Create a flash node, upload an swf file, and hit submit, and you have flash on your site.
For more advanced use you can combine flash node with SWF Tools and flash node will accept flv and mp3 files for easy playback. You can use the flash node input filter to re-use your flash content in other nodes. Or use PHP to construct flashvars strings to let flash elements react to your site.
Now with Views!
After many requests the first releases of flash node with support for Views is available. Views support is available for both flash node 5 and flash node 6. Using the Views capability you can define customised views that include flash content. You can pass parameters to the flash content as you would with a flash node macro, so you can scale the content to a size to suit your needs. Documentation for Views support isn't in place yet, but hopefully it is fairly self explanatory.
Content Blocker enables users to block the content they see according to various parameters. Current implementations are for blocking by user and blocking by leech feed. So like on some social networking sites, users can say "I don't want to see any content by User X."