<font face="Verdana, Arial, Helvetica, sans-serif" size="2">I thinking about exchanging my Aeroplan points to Esso Extra points.</font>
DON'T DO IT!!!!
(If you do, Empress will put a bucket on his head until we all sing "Torres Malenas" to him.)
Do a recent search about points.com in the AC forum, and you'll hear nothing but grief, and how bad the exchange rates are. It's not uncommon to be paying an 85%+ commission to transfer points -- that is, you lose over 85% of the value of the points in the transaction. Almost any other use would be preferable.
Like Destina, points.com is mostly useful for insane people.
Points.com & Destina go together like Paranoia and Schizophrenia.