The Oregonian/OregonLive is in the midst of a multi-part series looking at the causes and answers to homelessness in Portland. We want to know what you think, and what else you want to know.

The fourth installment examines the spread of homelessness to the suburbs and small towns that ring Portland. Read the stories, then come back here to tell us what you think. Leave comments and questions at the bottom of this post, or email reporter Anna Griffin directly.

And join us Thursday, Feb. 12, at 10:30 a.m. for a live chat with representatives from Northwest Housing Alternatives. The Milwaukie-based nonprofit runs a homeless shelter for families in Clackamas County, provides help to hundreds of families at risk of ending up homeless and builds affordable housing in 16 Oregon counties.