In my opinion recommandations on LinkedIn are fairly trustworthy because:
0. they are redacted from logged-in accounts (while still possible I believe the risk of having an impersonator write someone's a recommandation is rather low, YMMV)
1. the relationship between the two is clearly stated
2. you are 1 click away from finding more about the person that wrote the review
It's arguable, but a recommandation on LinkedIn takes more work than a recommandation by phone. The words you say on LinkedIn tend to stay, and rather openly accessible.
0. they are redacted from logged-in accounts (while still possible I believe the risk of having an impersonator write someone's a recommandation is rather low, YMMV)
1. the relationship between the two is clearly stated
2. you are 1 click away from finding more about the person that wrote the review
It's arguable, but a recommandation on LinkedIn takes more work than a recommandation by phone. The words you say on LinkedIn tend to stay, and rather openly accessible.