I Am Sharing Satan

I'm interested in web services: doing things via the browser instead of desktop apps. What makes something a good web service?

Some web services are applications that are very resource-intensive -- applications that wouldn't work on the desktop because they'd require too much disk space or too much processing power. Google maps comes to mind. Heck, Google itself comes to mind.

Others are at the opposite end of the scale. Would you spend the time to install an application just to find out that "Old man or clean" and "non-local dream" are anagrams for "Ronald Coleman"? And if you've visited the blender, can you resist the temptation to try it out?

Spoiler: This is an anagram.