I post only family-friendly content, and have very engaged mostly female audience. I mostly post recipes, fashion, crafts, posts about Twitter parties, and beauty. I post daily, and my account is very active. I mostly retweet great content I find online, and post links to my own blog posts, or specific products I am promoting.
Limitations - What the user will and will not tweet about.
no adult content, no gambling, no violence, every tweet will have to be confirmed before posting it.