I've come across a few strange blocks. Recently when researching bread knives I found that the website of the French knife company, Opinel, is blocked by at lea

I've come across a few strange blocks. Recently when researching bread knives I found that the website of the French knife company, Opinel, is blocked by at least two UK mobile carrier's content filters. (www.opinel.com, blocked by Three and Vodafone. Not blocked by O2.) Their US site (www.opinel-usa.com) is not blocked, however, nor are the many online retailers which sell their knives.