if u go to folder options > view > click/enable show system files/show hidden files, u will be able to seen in the explorer.
recycler contains all the files u have deleted. this is a system folder. if u empty ur recyclebin, u will find these folders to be empty.
system resore folder contains the info on system retore points. i choose to have my system restore service on, as i find it useful. those who dont use systemrestore, can safely delete this folder.
the incinerate folder is, i think, system mechanic version of the recycle bin, where it erases files permanently.