1. It would be helpful if the links are clickable
2. zerodollarmovies has a lot of videos that are no longer available
3. screenr.com is no longer active
4. codeacademy is recommended
5. lovelycharts.com requires Flash -> no longer supported by Google Chrome
6. jotti.org is extremely slow. Use Virustotal instead
7. regex.info with correct link
8. join.me requires you to make an account
9. wordle.net requires Java -> not supported by Google Chrome
10. liveshare.com is no longer available
11. midomi.com requires Flash -> no longer supported by Google Chrome
12. disposablewebpage will be discontinued as per 15 June 2017 (tomorrow)
13. sumopaint.com requires Flash -> no longer supported by Google Chrome
14. mailvu.com requires Flash -> no longer supported by Google Chrome
15. timerime.com requires Flash -> no longer supported by Google Chrome
16. deadurl.com gives a 403 forbidden error
17. Youtube Disco: unclear how this is supposed to work
18. radbox.me seems to be something else now

Quite a few of these sites require you to sign up or only provide a free trial for a limited period.

Nevertheless, there are a few gems in the list.