a Todo List

Is there a way in this site where I can visit a profile of a provider and add her to my todo list?

I have a feeling that I visit the profiles of providers and find them interesting.... but later loose track because I don't remember their names etc.

Is this feature already there?

Copy their showcase link. Then go to your user center. Select the memo thing and paste the link in there. Or, simply add them to your contacts

I also use my contacts list as a to do list.