Here's a clever service from the makers of 43 Folders (a favorite getting things done site), it's http://www.thanksno.com.

It's a friendly one page site that you would send to that friend, family member, or co-worker who sends you chain letters, jokes, pictures, videos, or other crap.

I think it's a pretty clever idea. I'm not sure what Miss Manners would think about it, but it feels reasonable from a netiquette point of view.

I seem to remember a number of other "one page sites" that were basically brochures presenting one point of view or the other.

Here's the few I remember:

• Web Standards - A tasteful (used to be) page that you could redirect your users to, gently prodding them to download a decent browser. (A recent "standards-based redesign" now causes retinal damage. Be warned.)
• Feed Icons - One page and a lot of images promoting the new standard icon for representing feeds. DasBlog uses these now.
• Common Errors in English - I'm stretching here, as this is an index into many pages, but this is (to me) the definitive colloquial english site, highlighting common errors. I've sent this link to a few well meaning writers. I've also sent the link to myself at least a dozen times.