Do you live in the US? Do you ever use Pinterest? "Hacks" are pretty well-known here by now and is simply a catch-all phrase for useful tips and tricks to make life easier for less money. "Loose" is quite frequently confused with "Lose" among ESL speakers, so when I run across its misuse I assume the person is not a native English speaker. No need to get snarky over spelling. For all you know he could be typing on his iPhone (like me) and autocorrect kicked in. Aren't we above being grammar nazis here? Geesh! Let's stick to the topic.