For Sale by Owner

Well, the pros are that you can save quite a bit of money.

The con is that your house really won't get the exposure it gets via the realtor system.

As others have said consider why your house isn't getting a lot of showings.  My realtor had a nifty guide that talked about how price affects showings.  If you are priced right you get lots of showings and offers.  If you are a bit high you get showings but no offers.  If you are priced too high you don't even get a lot of showings.  

I don't think MY realtors actually showed my house to anyone.  I had maybe 30 showings and they were almost all other realtors bringing people to the house.  

Also, negotiations and contract writing can be tricky for someone that doesn't do it all the time.  I trusted that my realtors were really good at their job...so when it came down to negotiations they could be that independent mediator that didn't have the emotion invested in the house.  When they told me they REALLY thought this was as high as the seller could go and that it was as good a price as I was going to get in this market I could believe them.  

I guess what I'm saying is that you lose a lot of experience and know-how by going it on your own.  

To me the cons of FSBO are losing the know-how/expertise, losing the wider exposure MLS provides, having to take a LOT of your own time to be available for showings, etc., and the potentially to get royally raked over the coals by a dishonest buyer.

The pro is really the cost savings.

I would try to take a look at why you weren't getting any showings and if you don't adore your realtor you should look for a new one.

That's location-dependent. Here there's almost a bidding war for the quality homes on the market. There was an article in the local paper this past week about this very thing. It's a sellers market in Albuquerque. 

And this can be a big con.  I have several realtor friends and even if the house is PERFECT for their client they won't bring it to them because they are not going to get the full commission.

If you place in the ad that you'll pay a 2% commission to realtors you might get a few to bite (but then you are really only saving 1%)

And based on the wackjobs I get replying to Craigslist ads for $300 items (people not showing up, people who just want to "kick the tires") I'm not sure it's an effective use of your time.

My advice, find a realtor who does a LARGE amount of volume.  You might get a little less than you wanted for the house bit it's a lot more likely to sell.

Amen, here in W. Michigan, we put our house on the market on Monday, 5/14, had an offer on Wednesday, 5/15 and purchase agreement the following day.  From my recent dealings in real estate, the bigger issue is houses hitting appraisals.  The appraisal on our new house came in $5k lower than the offer.  It was small enough that we just split the difference with the seller, but I've heard of larger differences here too...