If there are develop settings I use often, I will save it and use it as a starting point. I find it hard to recommend any in particular, because most of the ones I have downloaded, I have tweaked to my taste. But I think the nice thing is that you can look for presets related to styles you like: black and white, hi-key, desaturated colors, film emulations, etc. Then, you can see how the effect is achieved and develop your own, and send them to others who would want to see them.
I preferred the "direct positive" preset that came with Lightroom for a lot of outdoor photos with blue skies, but most of the other ones that came with it, I do not use.
Are there any particular types of presets you are interested in?