ogletree - 1:23 am on Nov 21, 2005 (gmt 0)
I'm glad your going to do captcha. Until you do what is going to happen is people will write botts that get a user name and then hit randomly to look like they are humans. Unfortunatly captcha has been broken I have seen articles where bots can get past that. The good news is that what you are planning will keep away almost all bots. If somebody wants to crawl your site bad enough there is not much you can do about it. You can just make it harder on them and more costly.