Add subchapter on limitations

article/proceedings.tex

@@ -1244,6 +1244,10 @@ Inbetween
   - wiki policy (compliance therewith)
   - test filters
 
+\section{Limitations}
+* an ethnographic analysis as a part of the present work is not possible; (cs perspective, limited time)
+* Disclaimer on limitations: there was only one person who manually tagged the filters according to their purpose; this has following limitations: ...; (Claudia promises to tag a second time if we submit a paper to the CHI;)
+
 \section{Discussion}
 
 * why get certain filters (and not others?)