Hint Number One;
Get a name that let's people know what it's about, and a name people will like saying.
Hint Number Two;
Prepare to fight against sites like Shoryuken, which is a long standing fighting game site, as well as a valued spot for arcade stick information.
Hint Number Three;
Be ready to offer something that other places don't have. Why should I go to your blog when I can go elsewhere for my fighting game needs? Are you going to have exclusive video's? Hints? Is your blog going to be written in a way that makes people want to read it? Am I really going to want to go to your blog instead of say, Dustloops for Blazblue information? Or video's?
Not trying to get your hopes up, but a blog is alot of hard work, and unless you stand out amongst a crowd, it will never amount to anything. My 2 cents anyway.