On a banking website I see that they have disabled right-click. Does that make the site any more secure? Is it a good general practice?

  Does it make the site any more secure?


No, it doesn't alter anything other than your ability to conveniently save items from a page. Using a browser's developer mode, turning off JS, overriding this with a different script that disables that pop-up, or just grabbing data off the wire after stripping the SSL will all work.


  Is it a good general practice?


This is an ache that the Internet has had to suffer from the height of GeoCities fame when folks didn't want you to "steal" their very poorly composed photos of dandelions and family pets. Dispensing all professionalism and being straight-forward as possible, I might hesitate to convict a person for smacking the responsible party of any modern site using this upside the head with a cast iron skillet. Aside from that it has generally fallen out of favor due to being a combination of ineffective and annoying. For instance, it would also make my spellchecker misbehave.
