You will get that nice car you are looking for but the name of this game is delayed gratification.

Do they only check for violent/sexual crime and threats to other tenant, or is a marijuana felony usually enough to keep a tenant from renting a place to live?

hl=en&rls=com.microsoft:en-us:IE-SearchBox&rlz=1I7GGLD_en&sa=X&oi=spell&resnum=1&ct=result&cd=1&q=neil+helmkay&spell=1 Of particular interest was this article where he sexually assulted a women, slashed two by-standers, and beat another guy over the head with a mailbox he pulled out of the ground: http://abclocal.go.com/wjrt/story?

There was one sexual offender that was registered with the county that lives there.  

Any crazy neighbors or maybe look at the sexual offenders map and see if anything is close to disclose.Killing a deal isn't too difficult if you are getting fair market value.    

But now my wife found stories in the news that the guy is facing felony charges surrounding his use of computers to solicit sexual contact with a minor.

All they think about is immediate gratification to forgot the life they are in so they blow their check quick.You do get 52 weeks income versus 48 but you also have more turnover, more bookkeeping, more collection costs, etc.

Also, are there any sites that some of you use to screen tenants (i.e. credit, background, sexual abuse, etc. hopefully country wide)

Instant gratification will kill a RE investor.

Most people don't have the discipline or resources to accomplish the paying off of a mortgage, most people want immediate gratification.