The How to Ask page doesn't correctly URL encode the string typed in the search field. For example, if someone types "Objects in C++" in the search field and then clicks on the "proceed »" link below, they are redirected to this URL:
https://stackoverflow.com/questions/ask?title=Objects%20in%20C++
Now on the top field of the new page, the title of the question shows up as "Objects in C " (!). Obviously, the title of the previous form is not correctly URL encoded, as the + sign should become %2B in the URL (I'd suggest using encodeURIComponent in JavaScript for this purpose). Apparently, the problem involves other StackExchange sites too, not just SO.
