fix for RT100731

this one liner fixes the issue #100731 on rt.cpan.org
Your approach is obviously good enough to block dumb scrapers with no javascript stuff.
I suppose the answer to 'is it good enough' lies in how much spam you are currently getting?

Also, if content is expiring (as mojopaste uses plain files, a cron job calling 'find' with suitable arguments works nicely enough) - then perhaps the answer is 'who cares'.

You could add all sorts of things like...
- nonce's (probably not a bad idea, so you dont resubmit stuff - but requires cookies/sessions)
- a hidden dumby form (maybe make it a honeypot and/or tarpit)
- searching for duplicate content
- content inspection
- ip based throttling, whitelists, blacklists
- automation of the interaction of the above

Personally, i have found that apache's mod_spamhaus to be quite effective at blocking bots. With the added advantage that my application doesn't need to know about it at all.