What an interesting idea – no login/passwords, just a hard to quess URL. Provided that there’s nothing very valuable there, this seems a simple way of giving adequate security for some things – such as the invites app mentioned. I like it.
Comments from my old blog:
What about Search Engine’s spidering it? Of course you’ll want to include a <META NAME=”ROBOTS” CONTENT=”NOINDEX, NOFOLLOW”>, but even then, I’ve read that certain search engines like askjeeves.com IGNORE those tags.
Well, I guess as you say it’ll have to be for urls that aren’t linked to anywhere. The URL itself is sent out by email in the example. That’s my guess anyway.