I still use mine, but I'll need to replace the battery pack soon since it keeps shutting down randomly. I like to use it mainly as a music player now.
I remember last looking for the universal remote apps (ie. Irreco) on N900, N810, and N800, and they no longer function as they should since the online services are shut down so we can't download UI templates/layouts. But there's another one called Raemote (stylized as RæMote) that I'll wanna try out.