Perhaps someone will find this useful if they run into a peculiar set of circumstances. I used it to pick up a .ca domain that is an industry name. like, seo.ca (well, not that nice, but similiar just longer).
Check your keyword rich terms on .ca domains. If they show as 'can't be registered", that indicates there may be an opportunity.
What the 'can't be registered' cryptic message means is that you can register it, if you own all the provincial variations. So if you can't register seo.ca, you CAN register seo.ca if you own seo.on.ca, seo.bc.ca, seo.ab.ca, etc.
What happened was there was one person running the .ca register back in the olden days. They wouldn't allow most people to register .ca's, instead you had to register your province.ca (on.ca, bc.ca, etc). That eventually got changed, but then there were people who owned seo.on.ca, seo.bc.ca, etc - and who gets seo.ca? The solution was, if a provincial variation of a domain existed, they refuse to allow the .ca to be registered unless you own all currently registered provincial registrations. that could even be just one - someone registered .on.ca of something, that blocks the .ca, and someone just sits on the .on.ca never realizing they can swap it out for the .ca.
So, check .ca's that are keyword rich or ones you like. Check the whois. If it says it can't be registered, check all the provincial variations to see which ones are registered. Buy all the provincial variations. Email your registrar and tell them to swap all your provincial variations for the .ca....and now you own the .ca.
