Increasing rents may cost you good tenants

[Alicia Harrington]

I've noticed that most landlords want to continue raising there rents even if they haven't done any updating to their properties.  If you had a tenant in your place for 4 years, would you continue increasing the rent?  Let's say your unit was a high turnover unit that you couldn't keep a tenant in it for over 12 months.  Then you were able to procure a long standing tenant who pays their rent with out any problems.  What would you do as a landlord?