At 2013 Search Engine Ranking Factors Survey & Correlation Data, I found some interesting information from a survey of search marketers regarding how search engines may rank websites. Many of the factors that may lead to an increase in page ranking didn't surprise me, but some of those that were listed as resulting in a decrease in a page's ranking did surprise me, e.g., the number of characters in a page's title and the use of hyphens in URLs, which I often use. I've factors expected to have negative results below:
| Page Has Twitter Card Markup | -0.02 |
| # of Large Images (Greater Than Or Equal to 1024X768px) | -0.02 |
| Folder Depth of URL (# of Trailing Slashes) | -0.02 |
| # of Videos On Page | -0.03 |
| Page Contains Google+ Authorship Markup | -0.03 |
| # of Google Adsense Slots in The Page | -0.03 |
| Domain has Numbers (example123.com) | -0.03 |
| # of Hyphens in Domain Name | -0.03 |
| Total Area of Adsense Slots on Page | -0.04 |
| # of Characters in the Title | -0.04 |
| URL Contains Hyphens | -0.04 |
| Total Length of the Full Domain (www.subdomain.pld.com) | -0.09 |
| URL Length in Characters | -0.10 |
| Response Time of Page in Seconds | -0.10 |
