Hi!
I Suggest to expand work with "Referrals" in the future versionsfuture versions components future versions. Here there are ample opportunities. For example, I create "Fair of Jobs" for graduates of University. Professors can represent itself as referrals (but not "Job Agency"!), recommending separate graduates.
Well to connect "Cover Letter" with a concrete referral, to give the chance to a referral to trace his Jobseekers, to confirm or reject the links to a referrals (it is established in profile Jobseekers) ans so on. There is a necessity of creation of a separate category of users - "Referrals". I think that such function to allow your successful a component considerably to surpass in functions similar decisions!
I hope that have clearly expressed the thought