Why do Yahoo and MyBlogLog allow someone else to claim ownership of my blog ?

I registered this blog to me with MyBlogLog (a Yahoo company) in September 2006. However, someone else, has also laid claim to my blog on MyBlogLog and bizarrely, despite me e-mailing them about it, they have neither had the courtesy to respond or deal with the false claim.

THIS LINK highlights the false claimant, who seems to have a grudge against Setanta Sports.

Hopefully the posting of this might encourage Yahoo and MyBlogLog to actually take action this time.

UPDATE: Yahoo seem to have responded to this. It's a shame they had not done this when I emailed them about it a few weeks ago.