What do you think about this product ?

Pretty awesome.

Just quickly skimmed through your site. I would say yes, it seems very informative and I like the 'screen patterns' section of the website.

Feels pretty good, can chat and share daily

really great, have been using it a lot recently

I think it's cool, but for inspiration rather than researching (aka good vs bad design). Dribble is excellent for inspiration too and it is free.

Pretty awesome.