There have been many attempts at getting WP and ZC to site nicely together, but in general, their fundamental structural schemas are too divergent.

I am no guru on the platforms of either system, but they are functionally very far apart.

But also, I look at it differently...

I believe that a blog and an eComm site serve two very different business objectives, and people vist a blog for very different reasons than an eComm site. I think that by mashing everything together can have overall detrimental effects. People get easily distracted, and while they may have come to the site initially to do some shopping, if they get the opportunity to sit and natter (or listen to other people's nattering), then you risk losing their focus. They may abandon the idea of shopping all-together.

Kinda defeats the purpose for getting them to the site in the first place.

We advise our clients to use blogs and social networking as HARVESTING sites, where people may land to have a bit of a chat, or whatever... but there is a clear strategy to get them to the eComm site ASAP, because that's what really counts.

We feel an eComm site MUST have the single-minded objective of generating sales, and to do this without the rist of distractions that could diminish that objective... That is why we suggest to clients that their eComm sites do NOT have any external links to blogs, etc, while the blogs must have lots of links to the eComm site.

Some people argue that this can "weaken" SEO potential, but we disagree. In our experience, people with a handful of well-maintained blogs and Social Pages, who use these to "harvest" visitors, find that their stores are quite busy and profitable.