eWeek.com reports that “

[a] company looking to chip away at IBM’s dominance in the mainframe space is countersuing its larger rival, claiming Big Blue is trying to use its massive size to bully its smaller competitor.”

According to CNetNews.com, “[a]cknowledging that caveat emptor goes only so far as a guideline for online sales, eBay has been putting new mechanisms in place to help fight fraud.”

In an unrelated story, CNetNews.com writes that “[r]etail giant Wal-Mart Stores is contracting with Microsoft and Novell–Microsoft’s preferred Linux partner–to build out the company’s Web operations, according to a Wal-Mart executive.”

ZDNet asks, “[w]ill [Apple’s] corporate miscues bruise its image?”   

In another Apple story, The Register reports that “Apple has been accused of applying double standards to trademark disputes by a UK security developer.”