## 4 Results  
### Statistics and Analysis  
Table 4 depicts a sample of the first ten entries of our data formation. The first column shows the websites, the second column presents the ranking of a website based on its popularity according to Alexa Internet (_alexa_rank). Columns 3 to 7 contain scores for each of the four major Semantic Web technologies derived by dividing the pages that used each technology as shown in Section 3.2 (variables _rss_ feeds, _html_, _og_, _twitter_schema_org) by the total number of pages crawled (variable _pages_crawled) thus creating the new variables ( _rss_score, _html_score, _og_score, _twitter_score, _schema_score). Columns from 8 to 10 contain the variables _html_variety, _og_variety and _twitter_variety. The last column contains the rating for each site based on the SWTI rating system detailed in Section 3.3 (variable _swti). The variables _microformats, _microformats_variety and _other, which identified usage of microformats or other json data in each web page were omitted from further statistical analysis because the percentage of websites with findings in these metrics was below 1%. Table 5 depicts the descriptive statistics for each variable and Table 6 depicts the frequency related statistics. In Figure 4 the histogram and boxplot of the _alexa_rank variable are presented, depicting the distribution and dispersion of the variable. The histogram and boxplot, the distribution and dispersion of the other sample values are plotted for each of the variables and presented in Appendix A. \begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \hline
**Domain** & **Alexa** & **RSS** & **Html** & **OG** & **Twitter** & **Schema** & **Html** & **OG** & **Twitter** & **SWTI** \\  & **Rank** & **Score** & **Score** & **Score** & **Score** & **var\%** & **var\%** & **var\%** & **var\%** & **Rating** \\ \hline
03 mediainc.com & 228,588 & 60.00 & 95.00 & 95.00 & 0.00 & 95.00 & 77 & 97 & 0 & 5.00 \\
10 xplusmedia.com & 269,411 & 38.46 & 96.15 & 96.15 & 0.00 & 96.15 & 31 & 96 & 0 & 4.50 \\
13 artists.com & 4,084,650 & 27.27 & 90.91 & 90.91 & 0.00 & 81.82 & 23 & 100 & 0 & 4.50 \\
1531 enettainment.com & 1,278,072 & 62.50 & 100.00 & 100.00 & 100.00 & 0.00 & 77 & 100 & 70 & 3.00 \\
1913 mediagroup.com & 4,799,977 & 60.00 & 100.00 & 0.00 & 0.00 & 0.00 & 31 & 0 & 0 & 1.00 \\
1 artworks.com & 4,141,675 & 65.22 & 91.30 & 91.30 & 86.96 & 0.00 & 31 & 100 & 5 & 2.50 \\
14 battmedia.com & 2,355,870 & 47.06 & 100.00 & 100.00 & 0.00 & 100.00 & 54 & 94 & 0 & 5.00 \\
1 media-en.com & 2,216,622 & 101.25 & 71.25 & 98.75 & 0.00 & 98.75 & 46 & 97 & 0 & 4.50 \\
03 mediainc.com & 228,588 & 30.00 & 17.50 & 85.00 & 0.00 & 85.00 & 31 & 100 & 0 & 4.50 \\
10 xplusmedia.com & 269,411 & 0.00 & 100.00 & 96.25 & 0.00 & 100.00 & 23 & 99 & 0 & 4.00 \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Data formation sample. \begin{table}
\begin{tabular}{c c} \hline \hline
**Condition** & **Stars Awarded** \\ \hline Website using at least some schema.org or Microformats structured data. & 1 \\ Website using Schema.org or Microformats structured data in at least & 1 \\
50\% of its crawled pages & 1 \\ Website using Open Graph or Twitter Cards to provide at least one & 1 \\ Website using unique Open Graph or Twitter Card titles for over & 0.5 \\
50\% of its rich objects & 0.5 \\ Website using at least one HTML5 Semantic Element & 0.5 \\ Website using at least 50\% of the different HTML5 Semantic Elements & 0.5 \\ Website providing at least one RSS feed & 0.5 \\ \hline Total & 5 \\ \hline \hline \end{tabular}
\end{table} 
Table 3: SWTI rating system. Table 7 depicts the descriptive statistics of the _swti variable for websites that were evaluated as Yellow or Green during the expert screening process described in Section 3.1.2 (variables _swti_yellow, swti_green). Frequency-related statistics for these variables are presented in Table 8 and their histograms and boxplots in Figures 5 and 6.