1. Buy old domains: Even if a domain is low on inbound links, the age factor will almost certainly be enough for it to have expired within the Google sandbox; typically a year is good age to ensure a domain is free of the Google sandbox. Domains never indexed, no matter what how early registration date, aren’t likely to avoid the Sandbox.

2. Buy recently expired domains: Same theory as above, but applied to domains that have actually expired. There is some evidence to suggest very recently expired domains can avoid a fresh Google Sandbox cycle. A good measure might be domains expired but still indexed. Beware of expired domains as Google’s new Domain Registration service means they are probably actively monitoring expired domains.

3. Acquire “trusted” links: Many sites have escaped the Google sandbox by acquiring enough high quality authoritative links. The most often cited source for links capable of freeing a site from the Google sandbox are high profile news sites; .gov, and .edu sites; and dmoz.org. That this method can immediately free you from the Google Sandbox is somewhat contested, but most seem to agree that it can either a) avoid being in the Google sandbox initially, or b) shorten your stay in the Google sandbox.

4. Collect the low hanging fruit: While your site is in the Google sandbox, you may still be able to rank high for low traffic and low competition keywords. Large quantities of low traffic terms can be just as rewarding, and if you target the right ones you’ll be strengthening the theme of your site for when your more competitive terms are freed from the sandbox.

5.Buy your way in—Irregardless of your Google sandbox status, you should almost always be running at least one PPC campaign for each of your targeted terms, in order to estimate the ROI before spending resources targeting terms organically.

6. Use subdomain from developed site: According a quite a few experts; since being in the Google sandbox appears to be based on 2nd level domain, hosting your site on a subdomain of an already established domain will avoid the Google sandbox. If you redirect all pages to the new domain once the site appears thoroughly indexed; it should reportedly maintain a non sandbox status.

Related posts:

1. What is the Google Sandbox?
2. Expiring Domains: Do They Have Value?
3. Google’s SandBox and TrustRank Filters
4. Google Redirect - 302 Answer From Google
5. SEO Techniques to Avoid