250 HTTP request per second of static files is peanuts (heck, my website can sustain 10 thousand). But 250 HTTP requests affecting dynamic content on bitcointalk.org is a bigger engineering pb: the average page is 100kB of dynamically rendered HTML supporting per-user theme, and most HTTP requests modify content (forum post) or are expensive requests (post searches).
Theymos has been improving the forum software, and is offering bounties to people to implement certain things.
It briefly crossed the 200€ mark yesterday. Maybe a lot of people wanted to cash out at that point. As soon as the price was dropping, more people decided it was a good time to sell.
While it was dropping, there were two ways you could expect it to go. Either it was dropping and was going to stay low, in which case you should sell, or it would rise back up in which case you should sell and then buy when it got cheap.
