Two things,

First, although "Find all posts who thanked <user>" is a bit more clear than it was previously, it still doesn't make a whole lot of sense. I don't know of any posts who can thank users. It should be changed to something like "Find all posts <user> was thanked for" or "Find all of <user>'s posts that were thanked".

Second, I find it useful to go to my profile every so often, but there's not a reliable link for that anywhere on the forums. Would it be possible to turn the "Welcome, <user>." up in the upper right hand corner next to the PM information into a profile link?