i have only been on here for about a month and the functions i have found most useful for possible trades are the reports of matching your want list with other peoples trade/for sale list. and vice versa. it is worth the time for you to make a want list and also a trade/for sale list to let the site automate the search instead of going through everyones profile one at a time.
Baseball: 1957 + 61 Topps, 1950 + 53 Bowman (Color), If i win the lottery maybe i will try to finish an 1887 Buchner Gold Coin and the 1914 and 1915 Cracker Jack Sets too