Put Your Tumblr Blog in a SubURL (subdirectory) instead of a Subdomain using a Python proxy. It's better to host your blog in a subdirectory rather than a subdomain because Google treats subdomains as totally separate sites which is bad for SEO.

TumblrInASubdirectoryViaAProxy.py

def blog(request, url=""):
    remote = "http://YOURTUMBLRSITE.tumblr.com"
    local = ""http://www.example.com/blog"

    conn = httplib2.Http()
    #This is to support Tumblr's search.
    if request.GET.get("q"):
        urlencode = lambda s: urllib.urlencode({'x': s})[2:]
        url = url+"/"+urlencode(request.GET.get("q"))
    proxy_url = "%s/%s" % (remote, url)
    resp, content = conn.request(proxy_url, request.method)
    p = re.compile('(.+id="content".+)(href|src|rel|action)="\/(.+id="footer".+)', re.DOTALL)
    content = re.sub(p, r'\1\2="%s/\3' % (local), content)
    content = content.replace(remote, local)
    return HttpResponse(content)

To copy paste that, you would need a site running on Django. If you google around, someone might have already written something similar in PHP, which you could probably just save to a directory on your web server.

Very good - thanks for the quick reply. Lyle Pratt wrote:

…

To copy paste that, you would need a site running on Django. If you google around, someone might have already written something similar in PHP, which you could probably just save to a directory on your web server. --- Reply to this email directly or view it on GitHub: https://gist.github.com/2468246

Thanks for posting this! A few questions...

1. This will result in the same content appearing under two URLs: under tumblr.com and under yourdomain.com/blog. Right? I've heard that Google dislikes duplicated content, so doesn't this counteract the SEO benefit somewhat?
2. It looks like the code does search-and-replace to make sure all links in the content point to yourdomain.com/blog instead of tumblr. Is that right? Does it work in practice? Are there any links that are missed (e.g. generated by JS, added via Ajax, etc)? Are there URLs that get mistakenly converted (e.g. Images hosted on tumblr servers)?
3. Is Tumblr cool with a setup like this? Does it jive with their policies?