HTML Forms Dilute Pagerank?

[TalkInThePark]

Today, we have way too many links on our homepage. About 30 of them are add-to-basket links (regular html links) pointing to a separate application. This application 302 redirects the client back to the referring page.

I have two questions:

1. Does the current implementation of our buttons dilute pagerank? Bear in mind the 302 redirect.

2. If the answer to the first question is yes, would transforming the buttons into form buttons change anything to the better? We would still 302 back to the referring page. I know Gbot follows GET forms and even POST forms, but does GBot pass on pagerank to the form URL?

[AlanMosley]

I think it does or it would be open to abuse, you could sculpt your link juice using posts

[TalkInThePark]

Thanks for answering. The question is rather wether G treats a form as a regular link (dilutes pagerank, passes pagerank), as a no-followed regular link (dilutes pagerank, does not pass pagerank) or as an email link (does not dilute pagerank, does not pass pagerank). Anyone?

[AlanMosley]

Google does follow POSTS, but i dont know if any pagerank flows.

http://googlewebmastercentral.blogspot.com/2011/11/get-post-and-safely-surfacing-more-of.html

As for the 302 redirects. not many know this, but link juice can flow thought a 302 redirect, if it has been in place for a long time, at least they do with Bing, like wize if you keep changeing a 301, Bing will treat it as a 302.

http://www.bing.com/community/site_blogs/b/webmaster/archive/2011/10/06/managing-redirects-301s-302s-and-canonicals.aspx