I was going to do a video blog on how to make a smoothie, but my video camera app wouldn't work on my Kindle so whatever. 
Later, though, I was shopping for a new canister of pepper gel, and thought that might be a good blog topic. 
There are two different kinds of pepper self-defense spray: the actual spray, and gel. Which you choose is a matter of personal preference; I use gel, for several reasons. Gel is sticky, and when the perpetrator tries to wipe it off, he's just going to get it stuck to his hand and smear it in even better places. Second, it's heavier, so you're going to have better accuracy in windy conditions. Speaking of wind, gel also doesn't have the blowback/secondary contamination problem spray has. I run with my dogs, so I don't want to hit them by accident, or myself. 
I would be remiss if I didn't mention the slight chance that the perp could actually wipe the gel off himself and fling it back at you. Slight, because I doubt most attackers are going to have the pain tolerance/presence of mind to do that. But worth mentioning all the same. 
This is my preferred gel. You can buy it here. 

The safety mechanism that keeps you from accidentally spraying yourself in the face is the best, IMO, and very easy to manipulate one-handed. Also, I remove the second keyring and attach a Wii controller strap, to keep it secured to my wrist. No worries about trying to get it in/out of a pocket.   
One thing to keep in mind that most people forget; that pepper spray that's been in the bottom of your purse forever? It has an expiration date. Make sure you replace it regularly. I actually don't know if my current canister is expired or not, since I managed to sweat the date off of it, which is why I decided to err on the side of safety and get a new one. 
Oh, and while I was shopping, I spied this: 

Wut. 
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