I honestly have not been that impressed with the quality of opinions one gets from such sites. Sort of like Yahoo Answers - anybody can post, anybody can claim they have real experience and anybody does.

How will your site differentiate between people with informed opinions and everybody else?

What about persons using this to promote products?

I would think it would be hard to have a user community broad enough that you'd have always-on live chat capability with a user of any product. That's the reason sites like Amazon use comments which can be left by a user at their convenience. If you want real-time capabilities, then someone who uses any (every) given product has to be online all the time or it will be frustrating for users looking for feedback. This probably means that the majority of your "experts" will be paid shills working for manufacturers to talk up their products.

Just like Amazon, etc., you have the difficulty of vetting your reviewers for accuracy, but in a real-time situation there is no way to monitor and moderate what they say, so it will be awfully hard to ban posers.

I find a lot of value in Amazon feedback, but only when others rate the quality of the feedback. An "instant feedback" site could be plagued with marketeers or simply idiots who like messing with people. This isn't a problem when the crowd diggs bad reviews down.

Oh well, I just thougt it might be some good idea. I'll think up something better

I go with just me
Tommy

How about a site which gathers reviews from other sites for use on mobile devices? I can't tell you how handy it is to have the power of Web 2.0 at your fingertips while you're shopping for a good deal!

I seconded Micco:

it was through Yahoo answer i was able to upload my Movie maker file for Youtube... the promoters are a lil percent representation against the market size...the most they can do is hype things..

would it be better...a reputable agency link for factual answer are featured in every prodcut website? Say Bureau of Food & Drug or Trade and Industry authority...

What would be in it for the people making recommendations? Who would care to spend time doing that? Most shopping hawks pride themselves on their knowledge & wouldn't be eager to just give it away. Maybe if an incentive system could be developed, so if someone you've made a recommendation to uses your advice & is happy afterward, they could give you points that you can accrue and trade in for something. But that would seem to have a lot of potential for abuse...