I was trying to look through some of my old posts so the first thing i did was click my username at the top of the screen which takes you to :
www.nopcommerce.com/account.aspx
but there is no link to my old posts here so i had to find one of the forum topics i'd created / contributed to and click my username to get to what i wanted ie
https://www.nopcommerce.com/profile.aspx?userid=7495
so, my suggestion is add some new tabs to account.aspx to list the info from profile.aspx ( contributions is already there )
as a separate suggestion, it'd be useful if there was an option in the search function to search only posts that the logged in user had subscribed to - that way we could quickly find topics we'd created/responded to previously
eg extra option in advanced search 'Limit results to my posts'
Andrei, I'm sure you'd find this would save you time too :-)