The other side of the question is what level of captcha protection is needed. What sort of spam are you getting that you had to turn on the captcha for? Is it specific to Desuarchive/Foolfuuka, or is it just generic crawling spambots? In the latter case, there should be more user-friendly ways to block them.
If a link is followed by a quotation mark, the HTML escaping occurs before linkification, and the " is split, with the " treated as part of the link, and the ; treated as plain text after the link.
After 11 years of work, I finally finished the ultimate meme. His name is Cool Shirts Guy. It's ridiculously amazing and has all kinds of epic jokes. Only I can post this meme because I am the best memer in the world. I am the best. No one is better than me, because, as previously stated, I am the best in the world at meming. I know I'm being modest, so I should say this meme was easy to make, because, as stated, I'm the best there is. This meme is perfect, hands down. Anyone who says it isn't perfect will have their comment deleted, blocked from my account, blocked from 4 chan, computer destroyed with a hammer, and you will be killed by my millions of fans at the snap of my fingers, because I can demand that much respect, because I'm the best. Hope you enjoy my meme. His name is Cool Shirts Guy.
http://desuarchive.org/int/thread/69636859/#69662020_12984 The archive of this thread has been getting spammed for almost 3 months now at an average rate of 6.2 posts an hour. I saw that some aussie noticed it last month, but it's still going on so I'm assuming that the admin wasn't notified and is still unaware of this.