All summer, the Red Light Clothing Exchange is running a series of $1 sidewalk sales, each benefiting a different local charity. This Sunday is next up, and all the money earned will be going to the Portland Rescue Mission, which has been providing services to the homeless and those suffering from addiction and abuse. (Their web site appears to be down at the moment.) If shopping is on the agenda this weekend (especially if you're going for volume) go nuts on these one-buck bargains and throw a little love at an important local institution.