A redirect will pass most of the PageRank, but not all of it.

A redirection chain will pass nothing at all.

Does 301 pass the penalty or anything that you have done bad on your old website to new website?

It depends on how bad you've been ;)

When we do 301 redirect, does it make it different on how we are doing it (eg. 301 the whole domain / 301 page by page)

Several Google engineers have recommended page specific 301's as much as possible.

Thanks for quick answer y'all

G1smd i have question for you?
[what do you mean by "A redirection chain will pass nothing at all"?]

My questions is simple: i dont care about the page rank pass on, assuming my old sites has established with links, if i move it to new site will those links pass on to the new site?

If yes would i be able to see it by typing command "link:www.domain.com" in Google / Yahoo? or it just pass the link juice only!

DJ

The details: The Google staffers recommended that you redirect individual pages or small groups of pages at one time, wait for that change to settle (into the index) and then redirect another page or small group of pages. If you do the whole site all at once, your ranking may drop for anywhere from a few weeks to many months.

Jim

What do you mean by ""site wide""?

If you mean all URLs on site A redirect to the same page on Site B, then, yes, that is a good idea. It can often be achieved with just two lines of code.

If you mean that all internal URLs of Site A redirect to one specific page (usually the root index page) of Site B, then, no, this is usually NOT a good idea.

if you 301's page "A" to page B than page B will show page "A" links in google WMT. The "old" penalty will follow ( just amtter of time )if you don't take any action against the reasons of the penalty. Also page by page redirect is the only way.