Increasingly, alert services use RSS as delivery option. Really Simple Syndication (RSS) is an XML-based format that scans a site for updates to the content, and then delivers the updated content as headlines. Each headline contains a link to the related web page. Google Reader is an example of an easy-to-use news reader.
Publisher provided TOC alerts Another option is to sign up for TOC alerts directly from the journal publishers or publishers of article databases to which
tiTOCs Check out a new, free service called ticTOCs. Access table of contents from 12,000 journals (this number is growing) and subscribe to the RSS feed. However, note that Cornell does not have subscriptions to every journal listed in the service (but you can request specific articles through Interlibrary Loan).
Off-campus? Try using the PassKey bookmarklet
The Cornell University Library New Book Finder allows you to search for new books by month, individual library, and subject classification. Use it to browse new titles, or create a customized RSS feed of your search results.