Forrst is great if you want to see what other designers and developers are working on. Talentopoly is great if you want to see what they're reading.

I think there's room for both as I am a Forrst member and still found myself wanting to build something like Talentopoly.

John -- Forrst is more for sharing actual work, we aim to be sharing what you're reading. We want it to be about the links to the stuff that matter to a developer or designers bottom line: new Google fonts, jquery plug-in, coffee code, etc.etc