I'm going to go a little against the prevailing opinion here--most of the responses seem to be telling you that $150 budget just isn't going to cut it, you need much more if you REALLY want to "get into photography." I agree to an extent--if you already KNOW enough about it to KNOW you want to do serious photography, then I agree, save your money until you can spend at least $600, bare minimum.
BUT...if you have never taken pictures at all, and really just want to see if it appeals to you, learn a little about it, and THEN decide if you want to get serious with it, I don't really see anything wrong with getting the best point-and-shoot your $150 can buy.
I used different versions of the Canon Powershot for many years--the last one I had before finally moving up to DSLR was a Powershot a630. It's several years old now, so I'm sure there are better versions of it now, but not sure which one would fit your budget. My Powershot was an 8 mp, and had--in addition to the standard auto mode--shutter-priority, aperture-priority and full manual modes, which allowed me to learn how to use all the settings so that there wasn't *quite* as big a learning curve when I moved to DSLR.
I even managed to "point and shoot" my way to several winning entries in some local photo contests, including two that won ribbons competing against photos that had clearly been taken with more professional cameras. I even sold a few of my point-and-shoot pieces and had a series I shot published as the cover shot and feature article photos for an industry magazine. So, point-and-shoots aren't *entirely* worthless.
I will reiterate what I said earlier, though--if you already KNOW you want to get serious about photography, then I agree with everyone else--keep saving. But if you just want to see if the hobby appeals to you, and/or if you feel you simply MUST have a camera NOW...then, imo, you can't beat the Powershots in that price range. Just make sure it has different shooting modes, including manual.