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I'm building a product category browsing page for a high-falutin' jewelry retailer where we display only product photos linking to individual product pages, without any text in the links. From an SEO and link-juice-passing perspective, is it most effective to embed the product titles as the alt attribute in each image, or to leave alt="" and use text substitutions (i.e. an inner which is css'd to display: none) within the <a>to help search engines accept my product titles as the link text with the most credibility?</a>

Oftentimes my site has content which I'm not really interested in having included in search engine results. Examples might be a "view cart" or "checkout" page, or old products in the catalog that are no longer available in our system. In the past, I'd blocked those pages from being indexed by using robots.txt or nofollowed links. However, it seems like there is potential link juice that's being lost by removing these from search engine indexes. What if, instead of keeping these pages out of the index completely, I use to reference the home page (http://www.mydomain.com) of the business? That way, even if the pages I don't care about accumulate a few links around the Internet, I'll be capturing the link juice behind the scenes without impacting the customer experience as they browse our site. Is there any downside of doing this, or am I missing any potential reasons why this wouldn't work as expected?

I've heard it said that Google may choose to stop following links after the first 100 on a page. The landing/category pages for my site's product catalog have earned quite a respectable PR and positioning in search results, and I'm currently paginating their product listings (about 200 products in a category) so that only a couple dozen products are shown on the first page, with links to "next page" and "previous page" being accomplished via query string (i.e. "?page=3"). An alternative option I have is to link to 100% of the contained products within the category's landing page (which would increase my on-page link count to ~300) and use CSS/Javascript to allow the user to simulate browsing between pages on the client side. My goal is to see as many of my product pages indexed as possible. Is this done better using my current scheme (where Googlebot would have to navigate to, say, Landing Page -> Page 6 -> Deeply Buried Product Page) or in the alternative method above, where all the links are in a single page? Since my landing pages are currently treated pretty well by search engines, would that "trust" cause them to follow more links than might normally be done? Thank you!