Ditto nitro and jellica. At this point a netlabel is no longer important as a service/distribution/website. It's purely about being a well curated and publicized "brand". The best thing you can do is be laser focused on what you really like and can honestly promote with enthusiasm. And of course your "brand name" is pretty important. Think hard about what image you're trying to build!
Also, don't worry to much about similarities to other names unless is really bugs you personally. I totally snaked Kool Skull's "Datamoshpit" when "Datathrash" started up but it turned out good for both of us since we just combined forces!