You can mention and link your manyvids account. Based on the ToS, from what I understand you can share your accounts on other sites, you just can't advertise them, so linking your MV account would be fine, but saying something like "go buy my videos on my MV page instead of on CB" would be a nono
"Independent Broadcasters are not allowed to advertise commercial websites that offer live webcam streams, under any circumstances; but they are allowed to mention their own personal profiles, homepages and wish lists. "