Domain buyouts and 301 redirects

[Weerdboil]

Hi,

I'm looking to buy a number of already established website domains with back links and 301 direct this to my main website.

The sites are very similar and all sell the same thing. Does anyone know how much link value will be past on from doing this? And, is this something that Google looks out for?

Also, if you have experience of this, how did it work out?

Thanks

[Highland]

301s pass most PR, but not necessarily all. This process also takes a bit of time.

That said, I have heard of people doing this and it does seem to be a good thing to do, provided there's some similarity to the new site in terms of content (i.e. 301 a tire domain to a real estate domain and it might not give you much long term benefit). The endgame for you should be to add the old domain's momentum to your own.