pegasusmom's post reminds me that the name of my site leaves out drivers. I actually tried to figure out a name that wouldn't, but none had the right ring to them. Although-- on just about every post you could substitute driving for riding very easily!
I update mine pretty frequently. http://lindsayberreth.com. It's basically the trials and tribulations of me and my OTTB competing at prelim, as well as some thoughts on my travels as an equine journalist.
Mine is in my sig line. (EquestrianAtHart.com) I post about the adventures I have with my big Belgian warmblood. He is 6 years old and we are both learning a lot as I just started eventing this past year. I am usually a very frequent poster but I am about to start learning the balance with work as I just graduated and won't have the same amount of time on my hands.
I have been enjoying finding new blogs through this thread!