"Phishing" attacks -- e-mail scams designed to fool people into handing over credit card numbers or other valuable financial data -- numbered 1,125 in April, nearly tripling from March, the Anti-Phishing Working Group said on Thursday.

Jerry Seinfeld is starring in a second internet-only advertisement for American Express, in which he goes on a road trip with Superman.

Sexually explicit Internet spam must now carry a warning label. A Federal Trade Commission rule went into effect Wednesday requiring that unsolicited commercial e-mail that contains sexually oriented material include the words "SEXUALLY EXPLICIT" in the subject line.

What's an invitation for a Gmail account worth? If you have an invitation to open an account on Google's new e-mail service, you could sell it on eBay for as much as $60. But if cash is a little too prosaic for you, your Gmail invitation could net you 4 pounds of fresh fudge, some Jewish mystical knowledge, a photo of a wife and a girlfriend kissing, a tarantula, Paris Hilton's phone number or any one of more than 1,000 other options.

Wait until next year. The advertising sales head of Internet powerhouse Yahoo! indicated Wednesday that Yahoo! could steal significant amounts of ad spending out of national advertisers' television budgets. But she suggested the shift wouldn't be significant until 2005.

Rumors that Google is offering users of its Gmail service an unprecedented 1 terabyte of storage space are untrue, the company said Wednesday, blaming a bug in the system for the confusion.

In a new 63-page white paper entitled, "Going Deep: Vertical Digital Directories," The Kelsey Group examines the role of vertical directories in local advertising. A "vertical digital directory" is an online property that provides deep amounts of structured content for a niche category, such as travel, real estate or home improvement. Among the report's key findings is that vertical directories are currently serving a valuable dual function - providing content to search engines in response to local queries, while also offering a gateway to paid-search advertising for small and medium-sized businesses.

Five months after proposing it, Yahoo published the technical details of its DomainKeys system for e-mail authentication.

Google just escalated the e-mail storage arms race by a factor of 1,000. Several users of the search engine's Gmail Web-based e-mail service noticed Tuesday that their storage limits had quietly been raised to 1 million megabytes, or 1 terabyte. That's four times the typical capacity of a new high-end PC's hard drive.

Lawyers representing the makers of the Kazaa file-sharing software, Sharman Networks, told the Australian Federal Court on Friday that their client has in no way infringed copyright.