2010-12-11 // Protect your email address with reCAPTCHA
reCAPTCHA is a well known service and used by many websites. But a little know feature is their email address protection service. Just enter your mail address, click on “Protect It!” and everyone who wants to see your address has to solve a CAPTCHA before it will be shown. You will get a common link1) and HTML source code where only a part of your mail address is replaced:2)
Examples, created with the address foobar@example.com:
http://www.google.com/recaptcha/mailhide/d?k=01rhhtdpw4VPtj-ejfKMpwEw==&c=VGXKsGQ8aXgpBQISADqLu1SFbEYkjlSIeDbzeRHbKL4=
Simply copy & paste the URL or use something like “Click to see my address” when you are able to create links with custom text.
foo<a href="http://www.google.com/recaptcha/mailhide/d?k=01rhhtdpw4VPtj-ejfKMpwEw==&c=VGXKsGQ8aXgpBQISADqLu1SFbEYkjlSIeDbzeRHbKL4=" onclick="window.open('http://www.google.com/recaptcha/mailhide/d?k\07501rhhtdpw4VPtj-ejfKMpwEw\75\75\46c\75VGXKsGQ8aXgpBQISADqLu1SFbEYkjlSIeDbzeRHbKL4\075', '', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=500,height=300'); return false;" title="Reveal this e-mail address">...</a>@example.com
This will produce something like “foo...@example.com”.
Actually an old hat, but I just saw tons of plain email addresses in a forum. The smarter ones replaced @/. with [a]/[dot]. While this is better then nothing, most bots should be intelligent enough to parse such replacements. reCAPTCHA FTW.
Leave a comment…
- E-Mail address will not be published.
- Formatting:
//italic// __underlined__
**bold**''preformatted'' - Links:
[[http://example.com]]
[[http://example.com|Link Text]] - Quotation:
> This is a quote. Don't forget the space in front of the text: "> "
- Code:
<code>This is unspecific source code</code>
<code [lang]>This is specifc [lang] code</code>
<code php><?php echo 'example'; ?></code>
Available: html, css, javascript, bash, cpp, … - Lists:
Indent your text by two spaces and use a * for
each unordered list item or a - for ordered ones.
