Spam-tastic

I seem to be getting a few spam comments.

I now face a monumental decision:

1. Just delete it as I find it.  This is what I’ve been doing but it does expose me to the terrible language that spammers typically use.  I don’t mean expletives although these do make me blush.  I mean the mangling of the English language that these vile fiends tend to employ.
2. Ignore it in the hope that they will tire of my blog and depart to harass some other poor soul adrift in the sea of blogs.  I don’t want to ignore it because spammers must be discouraged.
3. Enforce the use of a wordpress’ special magic “You must be logged in to comment” magic shield of magic.  This naturally excludes lots of lovely people who travel from all over the known universe just to comment on my blog.  Seriously there are thousands of them out there waiting to leave a comment.  All I need to do is write an entry worthy of their comments.

So, option 1, 2, 3 or a hitherto undisclosed option 4?