Hey.. Is it legal to use "youtube" in a subdomain name .. youtubexxxxx.blogpost.com xxxx doesnt mean adult. Just some word after youtube ? Is there any subdomain, or domain name with "youtube" ? Thanks
It could still be trademark infringement regardless of whether or not anyone else is using it if your content relates to videos. If you are building a blog about tire tubes, then it might be another story.
What about those site that say ebaypowerseller.com or the worldofwarcraftguides.com also iphonedetail....are these all infringements? If so what can they do?
Yes. Ebay even won their infringement case against PerfumeBay for infringement. Some gaming companies are known to allow usage, but that doesn't mean they couldn't do something if they wanted. What could they do? Sue you for infringement, take all the revenue the site has ever generated, plus hefty damages, collect treble their legal fees - and also force the domain to be turned over to them.
Basically if they can prove you are attracting attention using their name they can come after you, it all depends on if they want to or if they can get something out of it. Obviously if they sue you and you have no money isn't really worth it unless they wanna prove a point.
Read and try to understand this if you still think it's ridiculous: http://www.ca9.uscourts.gov/ca9/newopinions.nsf/85AEE84897725D758825738A005C180E/$file/0556794.pdf?openelement
Most of the links in the Google search are probably not infringing. Using the trademark in the main URL or as the subdomain is infringing (www.myyoutube.com or youtube.myvideos.com) but I have not seen any case (lawsuit or UDRP) where having as part of the non-dns part of the domain showing diretory structure has been ruled as infringement (www.myvideos.com/youtube). Of course, that might change.