Leaving the house is a great way to socialize, encounter serendipity, support local small businesses, and discover new food, beverages, and music.
Portlanders without internet at home -- because they don't want it, can't afford it, or it's too slow -- can use an old laptop, Android device, ebook reader device, or iPod touch to stay connected to friends and family, pay bills, study, download ebooks from the public library, and find out what they need to know.
People with cell phone data limits. Using wifi is a cheaper and faster way to download podcasts, videos, and audiobooks.
People looking for a welcoming place to hang out. Places that offer wifi signals are broadcasting another signal as well: "spend some time here, enjoy yourself!" Businesses with no wifi would rather take your money, and have you be on your way. That's fine, but it's good to know what you're in for.
Please consider making a donation. Creating, maintaining, and improving pdxwifimap costs time and money. That money can come from advertising, or it can come from individuals like you. Advertising takes up screen space, takes time to read, slows webpage loading, and takes time from my priority: making an awesome resource. By contributing your dollars to the cause, you can help me best serve individual people like you. Any amount helps!
pdxwifimap.com benefits from the good work of everybody associated with these groups. I've happily contributed to both.
OpenStreetMap, "a free worldwide map, created by people like you."