Currently have a site ranking for a niche. For this site, I've also created a Twitter account which I send tweets from on average 1-2 times a day. With zero backlinks, the twitter profile is ranking 22 and 23 for the main keywords. Typically, I often see YouTube videos and Facebook pages on top of the serps for keywords. Rarely do I see twitter profiles. Do twitter profiles not convert as well as the other two, or do they have a negative stigma for some reason?