Won't there be more media companies using Twitter in the future? And won't they over-commercialize the service? When it happens, I'll be the first to blow the alarm. But I just don't see it. Up until now, any media joining Twitter or promoting a hashtag on a commercial has only made the service better, not worse. I'll give Costolo and his management team the benefit of the doubt on this one -- and keep tweeting. At the time of publication, the author had no positions in any of the companies mentioned.Follow @ericjacksonThis article is commentary by an independent contributor, separate from TheStreet's regular news coverage.