too many blogs?

i've realized just recently that i have wayy to many blogs! XD and i think its about time i just stick to about one or two blogs rather than have about billion.

i have a blog on: fc2, LJ, blogger, ehh and now i've forgotten my others but yeah xD

so this is where you guys come in! what do you think i should do? still to one blog which includes everything e.g life, cosplay, uni etc or keep it all separate?

also which blog do you think is the best to use? how easy it to use? is it difficult to upload photos?

which blog site do people use the most? should i use the one that has the most friends on?

I just want to gain other people's opinions on this! XD