One option is to serve different content based on the IP address of your visitor, or the HTTP header status of their user-agent/browser. This IP-based content delivery works by using a server-side script that looks up their IP address or interrogates their user-agent's HTTP header. This then informs the site which content should presented to that user, or rather which page, or if you want to make your life really difficult, which sub-domain.

Problem is that when looking up IPs the results aren't always accurate, and anonymous proxies give nonsense results. More importantly the major search engines spiders come from the US, so they'll show US IPs in the lookup- and they'll therefore be shown the US/english content, so that's what'll show up in searches, regardless of your region-tailored content.

If you want make the problem even messier you could try to deliver different language content for each country-visitor- but that requires cloaking which can get you heavily penalized.

The option that will work, and not create more problems than it fixes, is combining a set of proven, quantifiable, techniques:

1. Use one main domain e.g. www.example-site.com only- with this method the creation of country-specific sub-domains is unnecessary.

2. Create an explicitly named country-specific page for each geographic target market e.g. www.example-site/albania.

3. Submit each one of those country-specific pages to Google Webmaster Tools and specify its target location to direct the Google Crawlers from the right geographic location to the correct content.

4. Place country-specific location content in each page using main cities or regions e.g. "we provide stuff to Albania, in Tiranë, Durrës, Elbasan" etc. as a geographically relevant signal to the engines.

5. Submit each country specific page to Google Local (where that option exists)- this further reinforces geographic relevance in search.

6. Build links for each country-specific page with sites that have the relevant Country Code Top Level Domain e.g. www.example-site.al for Albania.

7. Submit country-specific articles to article sites and directories (there are 1,000s). These articles should reference the target country, and provide links back to the relevant country-specific page.

8. Use unique content for each country-specific page. It has to be unique or you're telling the engines that's it's spammy and of little/no value.

9. If you have a business address in a targeted country, use that address for further Google Local and geo-location purposes, with the use of vCard footers and other geo-location flags.

10. Select geographically relevant keywords to optimise each country-specific page with.

There may well be more, but these are a great baseline to start from. The key take-away here, as with any marketing, is to make your messaging and content "relevant". With good copywriting and sensitivity to your target market you could also make it "timely" and "personal"- thus fulfilling the marketers communication wish-list.