determine how many SFR have 30-100% equity that are in the bottom, middle and top 1/3 under the median sales priceAll of this data is compiled against certain factors and percentages and tabulated in 2 different spreadsheets and then is ranked.  

My lists were already compiled before then.

@May Emery I have a couple from list source and the other I compiled by driving fro dollars.

I have been taking all book recommendations and compiling a list and have started working my way through those as well.My question to the veterans in the industry is, how can I best prepare myself for the road ahead?

List segmentation can occur at most any point, both in aggregating and compiling data records as well as during and after contact established during a campaign.In my early years we did not have the benefit of PC's, so we manually vetted records based on a cursory eyeball decision as to their likihood to produce a profitable result.

I'm beginning to compile a mailing list from listsource.com using many of the filters recommended by some of the experts on BP.

@Michael Quarlesinteresting topic can you please elaborate on this pre NOD listwhat vendor is compiling and selling this list?

You don't have to reinvent the wheel here, but if you are going to go to the effort of compiling and scrubbing this data, why not develop a marketing piece that is going to make them think twice before throwing it into the garbage (since that is where 95% of your effort is likely going, even on the best campaigns)?

So that will add to the credibility to proposals and joint ventures that I discuss.I am about to launch another direct mail campaign to the list I compiled 3 months ago.  

I will be compiling that list over the next few days.