I sent this to Costco today.
Dear Costco! I pay your membership fee because I value the work you put into selecting your products. I trust that you do a good job at it, because you do. I think you need to know about a blunder someone on your staff made recently that puts this trust at risk.
I've bought an Acer desktop at Costco two months ago. It has Windows 7 preinstalled, and it comes with 1-year license of Kaspersky Internet Security. Sounds good, right?
The problem? The computer comes with McAfee software preinstalled, and no trace of Kaspersky. McAfee is "bloatware crap", to put it mildly. It changes your browser search engine (!) without as much as asking you. After you uninstall it, your browser is still hijacked, sending your searches to McAfee's "site advisor" (which is their monetization site redirecting to Yahoo).
Dear Costco. I believe it's a mistake on your part. Please get it fixed. It's probably Acer who does this, but if you have enough influence to make them provide unique Costco-only models, you definitely have a say in the kind of software they preinstall.
(my member ID and contact info follows).