I think there is a need for a reverse job portal which is open. So candidates can post their resumes, profiles, videos etc. to this portal and also select the categories or companies for which they want to be considered. Any employer can search for the candidates on this portal and contact them.
The idea is that the data is open and not in control of a job portal. There can be some security measures to keep the data safe and stop the spammers.
Not sure about linkedin. First of all you need an employer subscription to see the data for all the users. Also, for most of the users the data they put on linkedin is not very structured. It is mostly the dates of employment and sometimes a very general description about them.
The features that can distinguish such a site is that candidate data can be open and there is more structure to it and the primary purpose of the site is getting a job rather than business networking.
Using a platform is not nearly so 'go-getter' as building your own web property and making a gutsy proclamation of your own value. Using a platform is relatively conformist. By using a mechanism that takes some of the difficulty and creativity out of building and distributing a reverse app - you're really defeating its purpose.
The idea is that the data is open and not in control of a job portal. There can be some security measures to keep the data safe and stop the spammers.
Not sure if something like that is already there.