Finishing with boiled linseed oil
BLO is a good stand-alone finish for things that won't get wet.  That is to say that many people like the way it looks on it's own...but it does not provide any significant protection against moisture.  

For instance, it would be terrible as a stand-alone finish for an eating table or a side table in a TV watching area.

Very nice though for something like a TV stand, or a rocking chair or a picture frame.

Be sure to read up about fires from drying BLO rags.  BLO is unique in its ability to create enough heat while "curing" to light itself on fire.  Many garage fires have been started in this way.  As long as you handle the used rags properly, no problems.  Just tossing it into a trash can in your shop along with wood and sawdust...not so good.