There is a links in search systems, like:
/recent_blogs_feed-JAVASCRIPT_c-1.html
/index_feed-JAVASCRIPT_c-1_u-57.html
ETC.
Comments:
...r-30.html
...r-25.html
Feeds:
/popular_blogs_feed-explain_c-3.html
.../feed-explain.html
ETC
Duplicate content. Like: name.html - name-c_1-b_2.html.
ETC
