G-mail/Yahoo: moving
your content to your e-mail address.
LinkedIn: moving their content to your e-mail address.
G-mail/Yahoo: Duplicating your content.
LinkedIn: Manipulating your content.
G-mail/Yahoo: E-mail providers.
LinkedIn: Social media provider.
G-mail/Yahoo: uses protocols as intended to provide service.
LinkedIn: uses hacks to provide service.
G-mail/Yahoo: No risk of compromising devices.
LinkedIn: Extreme risk of device compromise. Intentionally circumvents device security features. Multiple potential points of security breach (at proxy server, at web server, through rendering engine).
No comparison, really.
