I tried to - but the site would not function properly to let me make entries. I sent an email to the owner of the site explaining the problem and never a reply - as such, my 9 games will never be recorded there. That was over a year ago.
If there is that little attention to the site, I won't be participating in it.
Based on some of the experiences I see up above with this - I see no reason to even bother. Pinside suits me well.