为什么这行代码会引发语法错误?

use*_*569 1 ruby ruby-on-rails ruby-on-rails-3

我在html.erb文件中有这一行:

<p> Share your unique link with as many people as you can. <b>The more people you refer, the sooner you will be invited to DreamStill.</b> Also, about every two weeks, <b>artists that have referred the greatest number of users will be featured in an email sent out to all DreamStill members!</b> To check up on how many users you have referred, simply enter your same email address (the one you used to sign up) into the signup form at <%= link to "the signup page.", "www.dreamstill.com" %></p>
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这是错误:

compile error
/app/app/views/user_mailer/email.html.erb:7: syntax error, unexpected '<'
<p> Share your unique link with...
 ^
/app/app/views/user_mailer/email.html.erb:7: syntax error, unexpected tIDENTIFIER, expecting kDO or '{' or '('
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ham*_*mar 5

link to应该是link_to.