30 Interesting SEO Experiments: Part 1 of 6

1. Anchor Text Links vs. Plain Text URLs

Within the academic sector, it’s not uncommon for web addresses to appear in plain text format as opposed to anchor text links. Just to see what would happen, a group of marketers from a college conducted an experiment to see if there was any difference in how the two formats performed SEO-wise.

While there was no discernible difference in the amount of traffic the link received, Google’s search engine was still able to discover the plain text URL within the site’s content.

2. Twitter and Google+ Effects on SEO

Since Google search no longer lists Twitter tweets in its search listings, do tweets have any impact at all on search engine results? This experiment involves an unindexed web page, a tweet link to that same page and a Google+ post link to the same page.

Between the two links, Google+ delivered almost immediate Google search results while the Twitter link took much longer. The tweet took a more “organic” route through various scraper and aggregator sites but it did eventually show up in Google search results.

3. Backlink Effects from Authoritative Sites

Does Google penalize backlinks on authoritative sites that have too many links? Does this affect the search engine pagerank of the “linked-in” sites? This experiment used two brand new websites and a single link to two different authoritative sites, one with a moderate number of links and the other with thousands of backlinks.

The results showed no difference in pagerank between the two new sites. This trend continued for months thereafter.

4. Do More Blog Posts Mean More Traffic?

Can a site with little to no traffic increase its visitor rate by blogging everyday for 100 days in a row? A small financial firm put this to the test by committing to a 100 day blog schedule along with adding video content and answering Twitter questions.

The firm’s efforts paid off as visitor traffic increased within days of the first blog post. Their website also saw better SEO rankings.

5. Content Stealing Sites

As Google will not display sites posting duplicate content from other sites, can a content hijacker get their site listed and the original site banned? The results from this experiment show that this does in fact happen.

Apparently, the deciding factor has to do with which site has the highest PR ranking and the more backlinks the better the chance the hijacker has.

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