I don't really have time to put up bet MLB often, much less put up play.  I will check the Massey Ratings, and based on the Money Line Chart, make a few picks.  

I check the opening lines at Wager Line.

I subscribe to Free Picks By Email.  Tim Trushel and Mike Lee are two handicappers I respect, so I often follow their plays.

I check  what the syndicate, or steam plays are at G&J Update.

I watch hot cappers in the posting forums and see who the top cappers are playing at Free Sports Monitor.

I'm always looking for good sources of plays to link from here, so if you, or someone you know is a decent handicapper, drop me a line and I'll add the link.

Last - and most important, I use money management to protect my bankroll.  If you aren't sizing your wagers according to your bankroll, chances are you'll go broke eventually.