The "Goo" then hardens and keeps the slab at height (for a while), because it's tree roots and soil conditions that make the cement move.Sometimes they drill hole to inject it, sometimes they come at it from the side.It's FAST..you can look it up on the web (see YouTube).For the Mockups I use GIMP....it's like Photoshop with less features, but enough to get the job done.There is a learning curve to it.

Just be sure that if you are customizing your card, you download the business card template for PhotoShop to ensure that your card meets VistaPrint's bleed specifications. 

I typed a simple letter on photoshop getting the writing to look as close as I could to handwriting left a space to hand write the site address and hand wrote the outside of the envelopes.

Pro tip: I did find at least one more thing I can automate and still keep it in my handwriting--I took a photo of my handwritten return address on an envelope, imported it to GIMP (like Photoshop), then removed all the background with the fuzzy select tool.

This wont stop them from just stealing the address, but hopefully when people drive up they will notice it isn't the same house.Stolen from google images:Sure its possible to photoshop it out, but there is much easier pickins out there and I imagine that is enough to deter 99% of the scammers.you can make the water mark the date of listing, your email, phone, company name ect.

My brother used photoshop. 

I find people value you more when you take interest in them and not just come off as somebody trying to "fake it to you make it"I mailed my first set of handwrittien letters last monday, next set of letters this monday....I'm up right now createing a few"bandit sign" type ads for craigslist using photoshop.

One trick I have used in the past with private sellers is to have a copy of a cashiers check made out to them personally accompany my offer... that stands out... since I pretty much gurantee no one else will do that.. and that is proof positive you have the cash.. now of course smart computer dudes and dudettes I guess could photo shop one.. but it has worked for me in the past.

In our MLS system (southern California) you are not allowed to doctor/Photoshop photos very much.

hahaha, its probably photoshopped but honestly, there is something called a "Backflow Preventer valve"  Mike Holmes is quite fond of them on Holmes on Homes.