It seems that the search feature (in the top right corner) only works for handles but fails to find blogs etc. I think it was like this for at least a week now.

It would be nice to see it fixed. Or is it broken only for me?

Look at this: http://mirror.codeforces.com/submissions/Hossam.Ali . He's sending like 5 solutions every minute. I think he's using codeforces API. Probably authors of API forgot to set query limit.