buckworks - 5:03 pm on Jul 20, 2010 (gmt 0)
Should a single letter be subject to the exclusionary powers of global trademark registrations?
No, the letter itself shouldn't, but artwork they create based on the letter might be.
Oprah and Overstock won't tread on each other's ground as long as their O's are distinct enough that we can tell one from another.
The phrase "best buy" is not trademarked, but the Best Buy store chain's distinctive sales-tag image containing those words is trademarked.