Add more interesting questions

article/proceedings.tex

@@ -334,6 +334,7 @@ statistics are info such as "Of the last 1,728 actions, this filter has matched
     \item how often were (which) filters triggered
     \item percentage of triggered filters/all edits; break down triggered filters according to typology
     \item percentage filters of different types over the years
+    \item what gets classified as vandalism? has this changed over time? (look at words and patterns triggered by the vandalism filters; read vandalism policy page)
 \end{itemize}
 
 \textbf{Questions on abuse\_filter table}
@@ -349,6 +350,7 @@ statistics are info such as "Of the last 1,728 actions, this filter has matched
     \item what are the values in the "group" column? what do they mean?
     \item which are the most frequently triggered filters of all time?
     \item is it new filters that get triggered most frequently? or are there also very active old ones?
+    \item how many different log filter editros are there (af\_user)?
 \end{itemize}
 
 \textbf{Questions on abuse\_filter\_log table}